Practice Test

Q1) Which of the following is not an organic compound? Show Answer

Q2) The first organic compound ever prepared in laboratory from elements is Show Answer

Q3) Compounds having the same molecular formula but differing in their structure are called as Show Answer

Q4) The ability of carbon atom to combine with one another to form long chains, branched chains and rings is known as Show Answer

Q5) Fuel used in automobiles is a mixture of Show Answer

Q6) Which of the following is not a petroleum product? Show Answer

Q7) Common element in all the organic compounds other than hydrogen is Show Answer

Q8) Which of the following statements is wrong? Show Answer

Q9) Which of the following elements forms the largest number of compounds? Show Answer

Q10) Which of the following is not the criteria for purity of a substance? Show Answer

Q11) Sugar is obtained from its saturated solution by Show Answer

Q12) Benzoic acid can be purified by Show Answer

Q13) Organic liquids like acetone is purified by _____ methods. Show Answer

Q14) Extraction of oils and fats from seeds and essence from flowers is done by using Show Answer

Q15) To purify mixtures of organic compounds _____ method is used. Show Answer

Q16) Sodium chloride crystals are Show Answer

Q17) Alum crystals are Show Answer

Q18) Copper sulphate crystals are Show Answer

Q19) Quartz crystals are Show Answer

Q20) The process of obtaining a solid in a pure crystalline form, from solution is known as Show Answer

Q21) The process ______ is used to separate two or more solids which are soluble in a given solvent Show Answer

Q22) Urea melts at _____ and acetanilide melts at 387 K. Show Answer

Q23) The soluble solids and miscible liquids are separated by Show Answer

Q24) Process used for the separation of compounds from the mixture of two or more miscible liquids having different boiling points is called Show Answer

Q25) Separation of binary mixture of acetone and benzene is done by various types of Show Answer

Q26) The purity of crystals can be checked by determining its Show Answer

Q27) A crystalline substance is that Show Answer

Q28) Boiling point of a liquid depends upon Show Answer

Q29) In the detection of melting point, thermometer along with the capillary containing the substance is placed in Show Answer

Q30) When undissolved solid is in contact with its solution, the supernatant liquid is called Show Answer

Q31) To determine the melting point, powdered substance is filled in Show Answer

Q32) To determine the boiling point, powdered liquid is filled in Show Answer

Q33) The two solids of variable solubilities are separated by the process of Show Answer

Q34) In Lassaigne method, the elements of the organic compound are fused with metallic Show Answer

Q35) The presence of nitrogen in an organic compound is confirmed when the complex form has Show Answer

Q36) The formation of ______ precipitate which is insoluble in ammonium hydroxide confirms the presence of iodine Show Answer

Q37) In Lassaigne method, the treatment of sodium fusion extract with sodium niroprusside produces violet colour which indicates the presence of Show Answer

Q38) _____ is usually detected from the chemical properties of the compound Show Answer

Q39) ______ method is not applicable to compounds containing nitrogen in the form of nitro and azo group Show Answer

Q40) Carius method is used for the estimation of fluorine as ______ is water soluble. Show Answer

Q41) In the Kjeldahls method, nitrogen in the organic compound is converted to Show Answer

Q42) 0.4 gm of an organic compound gave 0.188 g of silver bromide by halogen estimation method. The percentage of bromine in the compound is(At. Mass of Ag = 108, Br = 80) Show Answer

Q43) In the Dumas method, for the estimation of nitrogen, 0.84 g of an organic compound gave 448 mL of nitrogen at S.T.P. The percentage of nitrogen in the compound is Show Answer

Q44) 0.2585 g of an organic compound containing iodine was heated with excess of strong nitric acid and silver nitrate in a Carius tube. The precipitate of silver iodide was filtered, washed and dried. Its weight was found to be 0.3894 g. Calculate the percentage of iodine in the compound Show Answer

Q45) 0.4 g of an organic compound containing phosphorus gave 0.555 g of magnesium pyrophosphate by usual analysis. Calulate the percentage of phosphorus in the compound Show Answer

Q46) Dumas method is used for estimation of Show Answer

Q47) ______ has a linear structure due to sp hybridization of carbon Show Answer

Q48) Bond enthalpy and bond length in organic compounds are influenced by Show Answer

Q49) Aromatic compounds contain atleast one aromatic ring which resembles________ in their chemical behaviour Show Answer

Q50) The chemical properties of an organic compound are characterizes by its Show Answer

Q51) The homologous series consist of homologues which are arranged in the increasing order of their Show Answer

Q52) Which of the following is not a cyclic compound? Show Answer

Q53) Which of the following names is not correct in the IUPAC system of nomenclature? Show Answer

Q54) The compound having one isopropyl group is Show Answer

Q55) Which one of the following is not an alcohol? Show Answer

Q56) Which of the following compounds does not contain a C = O bond? Show Answer

Q57) The effect in which the displacements of electrons are temporary is called Show Answer

Q58) The phenomenon in which none of the structure describes most of the properties of the compound is termed as Show Answer

Q59) The number of contributing resonance structure contributes to Show Answer

Q60) In the '' no bond'' resonance structures carbon - carbon bond has _____ character Show Answer

Q61) Isopropyl radical has ______ hyperconjugation structures. Show Answer

Q62) The process of breaking or cleavage of covalent bond is known as Show Answer

Q63) Homolysis also occurs in the presence of catalyst such as Show Answer

Q64) The species in which carbon atom possesses a octet of electrons and a negative charge is called Show Answer

Q65) Stability of carbocation increases as the number of _____ substituents bonded to positively charged carbon atom increases Show Answer

Q66) Carbocations are______ and acts as a ______ Show Answer

Q67) Addition reaction is not shown by Show Answer

Q68) Which of the following is an example of elimination reaction? Show Answer

Q69) Purification of aniline and nitrobenzene can be done by ______ method Show Answer

Q70) Monoclinic sulphur has _______ crystals Show Answer

Q71) Copper sulphate crystal are of ______ colour Show Answer

Q72) Non - volatile soluble Impurities can be removed from a liquid by the process of Show Answer

Q73) The smallest ratio which shows the number of atoms of each element in a molecule of a compound is the Show Answer

Q74) In Lassaigne method, the presence of ______ is confirmed, if the white precipitate is soluble in ammonium hydroxide Show Answer

Q75) Homologues differ in molecular weight by Show Answer

Q76) Identify the bond formed which is polar in nature Show Answer

Q77) Which of the following carbocation has the least stability? Show Answer

Q78) The free radicals resulting from the cleavage of a bond are Show Answer

Q79) The general formula for an ether is
Show Answer

Q80) The general formula of a carboxylic acid is
Show Answer

Q81) The general formula of an ester is
Show Answer

Q82) ______ is filled in U-tube to absorb water from the organic mixture Show Answer

Q83) Molecular formula of benzene is Show Answer

Q84) In the Dumas method for the estimation of nitrogen, the gas collected in nitrometer is Show Answer

Q85) An organic compound containing bromine gave the following result on analysis C = 21.96 %, H = 4.58 % and Br = 73.36 % Find the molecular formula of the compound if the vapour density is 54.5 Show Answer

Q86) An organic substance on combusion gave 53.2% carbon, 15.5% hydrogen and 31.3% nitrogen. If the molecular weight is 45. Find the molecular formula Show Answer

Q87) The angle between the four valencies of carbon is Show Answer

Q88) In the homologous series, the successive members differ from each other in molecular formula by Show Answer

Q89) Which of the following is methanol? Show Answer

Q90) Which of the following is butan - 2 -ol? Show Answer

Q91) Which one of the following could be a cyclic alkane? Show Answer

Q92) Identify the electron withdrawing group from the following Show Answer

Q93) Which of the following carbocation wil be the most stable? Show Answer

Q94) Which of the following species does not act as a nucleophile? Show Answer

Q95) Identify the molecule which is NOT a nucleophile from the following Show Answer

Q96) Which of the following series contains only nucleophiles? Show Answer

Q97) Which of the following species has electron releasing (or + I inductive) effect? Show Answer

Q98) Which of the following species is not an electrophile? Show Answer

Q99) Which of the following is an electrophile? Show Answer

Q100) Friedrich wohler synthesized urea by heating a mixture of Show Answer

Q101) An organic compound containing C, H and N give the following result on analysis
C = 40%, H = 13.33% and N = 46.67% what would be the empirical formula? Show Answer

Q102) Which is the structural formula for 3 - ethyl, 2 - methylhex - 1 -ene? Show Answer

Q103) Which is the structural formula of 1, 2, 3 - propanetriol? Show Answer

Q104) The name of some compounds are given, which one is not in IUPAC system? Show Answer

Q105) Which is 1, 1- dimethylcyclohexane? Show Answer

Q106) Which is 1, 2- dimethylcyclobutane? Show Answer

Q107) Which of the following is hexan - 2 - ol ? Show Answer

Q108) Which of the following is 4-methylpentan-2-ol ? Show Answer

Q109) Which of the following is 2-methylpentan-3-ol? Show Answer

Q110) Which of the following is 4-methylpentan-1-ol ? Show Answer

Q111) Which of the following is a cycloalkane ? Show Answer

Q112) Which is 1, 1-Dichlorobutane ? Show Answer

Q113) Which structure below represents a ketone ? Show Answer

Q114) Which structure below represents an aldehyde ? Show Answer

Q115) Which structure below represents an ether ? Show Answer

Q116) The general formula of an aldehyde is Show Answer

Q117) The structure of 4 methyl - 2 - penten - 1 - ol is Show Answer

Q118) Iso-butyl chloride is Show Answer

Q119) 2-Methyl-2-butene will be represented as Show Answer

Q120) Which class of compound is not reported in IUPAC nomenclature? Show Answer

Q121) Cyclohexane is Show Answer

Q122) The structure representing a heterocyclic compound is Show Answer

Q123) The formula of 3-chloro-2,2dimethylbutane is Show Answer

Q124) 3-Methylpenta-1,3-diene is Show Answer

Q125) Which is an alternate name for methyl-n-propylmethane? Show Answer

Q126) Which of the following is heterocyclic aromatic species? Show Answer

Q127) Which nomenclature in IUPAC is not correct? Show Answer

Q128) 3-penylpropenoic acid is IUPAC name of Show Answer

Q129) Which among the following is the correct IUPAC name of isomylene? Show Answer

Q130) The correct IUPAC name of acetonitrile is Show Answer

Q131) neo-Heptyl alcohol is correctly represented as Show Answer

Q132) A student named the compound as 1,4-butadiene Show Answer

Q133) 2-Methylbut-2ene will be represented as Show Answer

Q134) The incorrect IUPAC name is Show Answer

Q135) IUPAC name of 3-iso-propyl-o-xylene is Show Answer

Q136) IUPAC name of 4-iso-propyl-m-xylene is Show Answer

Q137) Names of some compound are given. Which one is not in IUPAC system? Show Answer

Q138) Which of the following IUPAC names is correct? Show Answer

Q139) The structural formula of 2-methyl-2-butene is Show Answer

Q140) vinyl carbinol is Show Answer

Q141) The correct IUPAC name of phenetole is Show Answer

Q142) The IUPAC name of acraldehyde is Show Answer

Q143) The structural formula of cyclohexyl alcohol is Show Answer

Q144) The IUPAC name of tert-butyl chloride is Show Answer

Q145) Indicate the wrongly named compound Show Answer

Q146) Which of the following compound has wrong IUPAC name? Show Answer

Q147) The compound which has one iso-propyl group is Show Answer

Q148) Ammonia molecule is Show Answer

Q149) Heterolysis of propane gives Show Answer

Q150) Which of the following contains only three pairs of electrons Show Answer

Q151) Which of the following species is paramagnetic? Show Answer

Q152) Electrophiles are Show Answer

Q153) Homolytic and heterolytic bond dissociation eneriges are Show Answer

Q154) In hyperconjugation, the atom involved is Show Answer

Q155) Hyperconjugation is Show Answer

Q156) Reaction involving heterolytic fission are said to be produce via Show Answer

Q157) Due to its sextet (having six electrons), the carbonium ions are Show Answer

Q158) The +I-effect (inductive effect) is shown by Show Answer

Q159) Which of the following is singlet carbene? Show Answer

Q160) Which one of the following compound is most acidic? Show Answer

Q161) The -I effect is shown by Show Answer

Q162) Which of the following is strong base? Show Answer

Q163) Which of the following is an electrophilic reagent? Show Answer

Q164) Shifting of electron of a multiple bond under the influence of a reagent is called Show Answer

Q165) An alkene is most likely to react with Show Answer

Q166) Sulphur trioxide is Show Answer

Q167) Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is ................ hybridised. Show Answer

Q168) In carbonium ion the carbon bearing the positive charge is Show Answer

Q169) The central C atom of a carbanion possesses Show Answer

Q170) Chlorine in vinyl chloride is less reactive because Show Answer

Q171) The shape of carbonium ion is Show Answer

Q172) Which of the following is nucleophile? Show Answer

Q173) A neutral divalent carbon intermediate produced by the removal of two attached atom is called Show Answer

Q174) Which group has the maximum inductive effect? Show Answer

Q175) Zero inductive effect is shown by Show Answer

Q176) The structure of tertiary butyl carbonium ion is Show Answer

Q177) The compound which gives the most stable carbonium ion on dehydration is Show Answer

Q178) Which of the following statement is not correct? Show Answer

Q179) Which one of the following does not show resonance? Show Answer

Q180) Select the correct order of basic nature Show Answer

Q181) Which of the following can act as an nucleophile? Show Answer

Q182) The strongest base among the following Show Answer

Q183) Free radical can undergo Show Answer

Q184) The homolytic fission of a hydrocarbon results in the formation of Show Answer

Q185) Which of the following is not a nuclephile? Show Answer

Q186) Electrophilic reagent are Show Answer

Q187) Which of the following statement is false about resonance contribution structures? Show Answer

Q188) Which of the following is an electrophilic reagent? Show Answer

Q189) Heterolytic cleavage of a covalent bond gives only Show Answer

Q190) Which of the following is correct regarding the -I effect of the substituents? Show Answer

Q191) Nucleophilicity order is correctly represented by Show Answer

Q192) Which of the following is an electrophile? Show Answer

Q193) Which of the following is an nucleophile? Show Answer

Q194) The most reactive nucleophile among the following is Show Answer

Q195) Which of the following is most stable? Show Answer

Q196) Which of the following contains three pairs of electrons in the valence shell? Show Answer

Q197) Which of the following is the most stable carbocation (carbonium ion)? Show Answer

Q198) Which of the following is least stable? Show Answer

Q199) In which of the following homolytic bond fission takes place? Show Answer

Q200) Select the most stable carbocation from among the following. Show Answer

Q201) The compound having only primary hydrogen atom is Show Answer

Q202) Which of the following statement regarding the resonance energy of benzene is correct? Show Answer

Q203) The most stable carbonium ion among the following is Show Answer

Q204) Which of the following is least stable carbonium ion? Show Answer

Q205) Which of the following behaves both as a nucleophile and as an electrophile? Show Answer

Q206) Point out the correct statement about resonance? Show Answer

Q207) The most stable carbanion among the following is Show Answer

Q208) Resonance structure of a molecule does not have Show Answer

Q209) Which of the following acids would you expect to be the strongest? Show Answer

Q210) Among the following the most basic compound is Show Answer

Q211) Homolytic fission of C - C bond in ethane gives an intermediate in which carbon? Show Answer

Q212) The kind of delocalisation involving sigma bond orbitals is called Show Answer

Q213) The most unlikely representation of resonance structure of p-nitrophenoxide ion is Show Answer

Q214) Which of the following has the highest nucleophilicity? Show Answer

Q215) Which is most stable? Show Answer

Q216) The addition of HBr on 2-Butene is an example of Show Answer

Q217) Carbanions initiate Show Answer

Q218) Ease of abstraction of hydrogen is greater when attached to Show Answer

Q219) Why is light necessary to bring in chlorination reaction of alkane? Show Answer

Q220) What information is provided by reaction mechanism? Show Answer

Q221) Which of the following alkyl halides is used as a methylating agent? Show Answer

Q222) The reagent used in dehydrohalogenation process is Show Answer

Q223) Which one is an elimination reaction? Show Answer

Q224) The yield in organic reaction is generally poor because the reaction are Show Answer

Q225) The attacking species in the aromatic sulphonation is Show Answer

Q226) Addition of HI on double bond of propene yields iso-propyl iodide as major product. It is because the addition proceeds through Show Answer

Q227) Among the following compound which is most reactive towards nitration Show Answer

Q228) Dehydrogenation of ethanol to give ethanal is Show Answer

Q229) Acetaldehyde is the rearrangement product of Show Answer

Q230) Which of the following is an example of elimination reaction? Show Answer

Q231) Which species represent the electrophile in aromatic nitration? Show Answer

Q232) Which species represent the electrophile in aromatic nitration? Show Answer

Q233) The typical reaction of olefinic bond is Show Answer

Q234) The formation of cyanohydrin from a ketone is an example of Show Answer

Q235) The compound which gives least stable carbocation during dehydration is Show Answer

Q236) Which of the following is an example of nucleophile? Show Answer

Q237) Which of the following is non aromatic? Show Answer

Q238) The +I effect of alkyl group is in the order Show Answer

Q239) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the order Show Answer

Q240) Among the following, the least stable resonance structure is Show Answer

Q241) The IUPAC name of neo-pentane is Show Answer

Q242) 3-phenylpropenoic acid is IUPAC name of : Show Answer

Q243) The strain in bonds of cyclopropane is : Show Answer

Q244) Chlorine in vinyl chloride is less reactive because : Show Answer

Q245) The alkene that exhibits geometrical isomerism is Show Answer

Q246) Pick out the alkane which differs from the other members of the group Show Answer

Q247) Detection of sulphur in sodium extract is done by Show Answer

Q248) Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which
confirm the presence of Show Answer

Q249) Conversion of chlorobenzene to phenol involves Show Answer

Q250) In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract.
Formation of violet colour is due to Show Answer

Q251) The maximum bond energy is present Show Answer

Q252) The number of secondary hydrogens in 2, 2-dimethyl butane is Show Answer

Q253) Find the non-staggered form (s) of ethane : Show Answer

Q254) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the
order Show Answer

Q255) The addition reaction among the following is Show Answer

Q256) The correct definition for organic chemistry is : Show Answer

Q257) Which of the organic compounds will give red colour in Lassaigne test? Show Answer

Q258) The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic
compound is Show Answer

Q259) The production of an optically active compound from a symmetric molecule without resolution is called : Show Answer

Q260) Which is wrong IUPAC name? Show Answer

Q261) Which of the following statements is wrong? Show Answer

Q262) Nitroethane can exhibit one of the following kind of isomerism Show Answer

Q263) Which of the following would show configurational enantiomorphism? Show Answer

Q264) Heterolysis of carbon-chlorine bond produces : Show Answer

Q265) Maximum enol content is in Show Answer

Q266) Which of the following compounds will show metamerism? Show Answer

Q267) Which of the following is elimination reaction Show Answer

Q268) Mixture of sugar and common salt is separated by crystallisation by dissolving in Show Answer

Q269) The general formula for cycloalkanes is : Show Answer

Q270) The bond that undergoes heterolytic cleavage most easily is Show Answer

Q271) Phosphorus is estimated as Show Answer

Q272) Species containing carbon with three bonds and an electron are called : Show Answer

Q273) Which of the aldehyde is most reactive? Show Answer

Q274) 3-methyl penta-1,3-diene is : Show Answer

Q275) Which of the following compounds is optically active? Show Answer

Q276) “The negative part of the addendum adds on the carbon atom joined to the least number of hydrogen
atoms.” This statement is called : Show Answer

Q277) d-tartaric acid and l-tartaric acid are : Show Answer

Q278) Which of the following is a pair of functional isomers? Show Answer

Q279) Which of the following is an optically active compound? Show Answer

Q280) Bond energy ……..with the increase in number of lone pairs on the bonded atoms. Show Answer

Q281) A liquid decomposes at its normal boiling point. It can be purified by Show Answer

Q282) On monochlorination of 2-methyl butane, the number of chiral compounds formed are : Show Answer

Q283) Stability of which intermediate is not governed by hyperconjugation? Show Answer

Q284) The ammonia evolved from the treatment of 0.30g of an organic compound for the estimation of nitrogen
was passed in 100mL of 0.1M sulphuric acid. The excess of acid required 20mL of 0.5 M sodium hydroxide
solution for complete neutralisation. The organic compound is Show Answer

Q285) Number of possible isomers of glucose are : Show Answer

Q286) The stability of 2,3-dimethyl but-2-ene is more than 2-butene. This can be explained in terms of : Show Answer

Q287) Protin solvent is Show Answer

Q288) Among the following compounds (I-III) the correct order of reaction with electrophilic reagand is Show Answer

Q289) How many chiral compounds are possible on monochlorination of 2-methyl butane? Show Answer

Q290) The epoxide ring consists of which of the following? Show Answer

Q291) The reaction which is not the example of nucleophilic substitution among the following is Show Answer

Q292) An important chemical method to resolve a racemic mixture makes use of the formation of : Show Answer

Q293) Which of the following complex formation indicates presence of sulphur in the organic compound when
sodium nitroprusside is added to sodium extract of the compound? Show Answer

Q294) Who pointed out the concept hyperconjugation? Show Answer

Q295) Alkyl halide can be converted into alkene by Show Answer

Q296) The optically active alkane with lowest molecular weight is : Show Answer

Q297) Which type of isomerism is most common among ethers? Show Answer

Q298) With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the
order Show Answer

Q299) Which of the following compounds are not arranged on order of decreasing reactivity towards
electrophilic substitution? Show Answer

Q300) A mixture of camphor and benzoic acid can be separated by Show Answer

Q301) Resonance energy is more for Show Answer

Q302) Grignard reagent adds to Show Answer

Q303) Which of the following is not chiral? Show Answer

Q304) Detection of phosphorus in the compound can be done by its conversion into phosphate. Reagent to
identify phosphate ion is Show Answer

Q305) The hemolytic fission of a hydrocarbon results in the formation of: Show Answer

Q306) Methoxy methane and ethanol are Show Answer

Q307) Which one of the following monoenes does not exhibit geometric isomerism? Show Answer

Q308) When two halogen atoms are attached to two adjacent carbon atoms, the dihaloalkane is called : Show Answer

Q309) The electrophile involved in the sulphonation of benzene is Show Answer

Q310) In Kjeldahl’s method, then nitrogen present in the organic compound is quantitatively converted into Show Answer

Q311) The compound which gives the most stable carbonium ion on dehydration is Show Answer

Q312) A similarity between optical and geometrical isomerism is that : Show Answer

Q313) Reaction of phenol with chloroforms/sodium hydroxide to give o-hydroxy benzaldehyde involves the
formation of Show Answer

Q314) Which kind of fission is favoured by sunlight? Show Answer

Q315) Which class of compounds can exhibit geometrical isomerism? Show Answer

Q316) Which of the following compounds is optically active? Show Answer

Q317) To which ring size cycloalkanes, Baeyer’s strain theory is not valid? Show Answer

Q318) Which of the following orders is not correct regarding the – I effect of the substitutents? Show Answer

Q319) Lactic acid shows optical activity in : Show Answer

Q320) In cyclopropane, cyclobutane and cyclohexane, the common group is Show Answer

Q321) Allyl isocyanide has : Show Answer

Q322) +I effect is shown by Show Answer

Q323) Which one of the following is the stable structure of cyclohexatriene? Show Answer

Q324) Total number of rotational conformers of n-butane are : Show Answer

Q325) Sublimation is a process in which a solid Show Answer

Q326) The group named as benzal possesses ……nature. Show Answer

Q327) 29.5 mg of organic compound containing nitrogen was digested according to Kjeldahl’s method and the
evolved ammonia was absorbed in 20mL of 0.1 M HCl solution. The excess of the acid required 15mL of
0.1M NaOH solution for complete neutralisation. The percentage of nitrogen in the compound is Show Answer

Q328) The highest electrical conductivity of the following aqueous solutions is of Show Answer

Q329) Nucleophiles are : Show Answer

Q330) Ethyl acetoacetate exhibits : Show Answer

Q331) A molecule of urea can show Show Answer

Q332) Geometrical isomerism is possible in case of Show Answer

Q333) Anti-Markownikoff addition of HBr is not observed in : Show Answer

Q334) The number of 1°, 2° and 3° carbon atoms present in isopentane are respectively : Show Answer

Q335) The restricted rotation about carbon-carbon double bond in 2-butene is due to: Show Answer

Q336) Formation of acetylene from ethylene is an example of Show Answer

Q337) The structure of cis-bis (propenyl) ethane is : Show Answer

Q338) The compound which reacts with HBr obeying Markownikoff’s rule is: Show Answer

Q339) A molecule of benzene contains : Show Answer

Q340) Zn—Cu couple used as reducing agent is : Show Answer

Q341) Considering the state of hybridization of carbon atoms, find out the molecule among the following which is
linear? Show Answer

Q342) Tautomerism is not exhibited by Show Answer

Q343) Which of the substance is purified by sublimation? Show Answer

Q344) The number of optical enantiomorphs of tartaric acid : Show Answer

Q345) Which of the following is useful for making pure water from a solution of salt in water? Show Answer

Q346) Which of the following does not contain chiral carbon atom? Show Answer

Q347) Among the following orbital bonds, the angle is minimum between : Show Answer

Q348) Polarization of electron in acrolein may be written as Show Answer

Q349) Two crystalline forms of a substance, one being a mirror image of the other are called : Show Answer

Q350) Hyperconjugation is Show Answer

Q351) Which one of the following reactions is a condensation reaction? Show Answer

Q352) Which group has the maximum-Inductive effect? Show Answer

Q353) Which is incorrect about enantiomorphs? Show Answer

Q354) Which one is the seniormost functional group in the nomenclature of an organic compound if it possesses
more than one functional group? Show Answer

Q355) The reaction intermediate produced, by homolytic cleavage of a bond is called Show Answer

Q356) Fractional distillation is useful in distillation of Show Answer

Q357) Which of the following species is paramagnetic? Show Answer

Q358) Free radical has unpaired electron. Show Answer

Q359) Select the organic compound which was prepared for the first time in laboratory from its elements : Show Answer

Q360) Which of the following compounds can exist in optically active form? Show Answer

Q361) Select the most reactive cycloalkane : Show Answer

Q362) Glyoxal is Show Answer

Q363) IUPAC name of acraldehyde is Show Answer

Q364) What information is provided by reaction mechanism? Show Answer

Q365) The enolic from of acetone contains Show Answer

Q366) Which of the following acids has the smallest dissociation constant? Show Answer

Q367) Among the following the strongest nucleophile is Show Answer

Q368) Which of the following statements is correct? Show Answer

Q369) Which of the following species does not exert a resonance effect? Show Answer

Q370) Lactic acid molecule has Show Answer

Q371) The arrangement of atoms that characterises a particular stereoisomer is called : Show Answer

Q372) An alkane forms isomers if the number of carbon atoms is : Show Answer

Q373) Which of the following statements is correct? Show Answer

Q374) Qualitative test of halogens in an organic compound is made by Show Answer

Q375) Which one of the following will most readily be dehydrated in acidic conditions? Show Answer

Q376) The family to which methoxyethene belongs, is : Show Answer

Q377) Electrophiles are : Show Answer

Q378) Iso-propyl chloride undergoes hydrolysis by Show Answer

Q379) Carbon and hydrogen are estimated in organic compounds by Show Answer

Q380) The compound having highest dipole moment is : Show Answer

Q381) A free radical is : Show Answer

Q382) In electrophilic aromatic substitution reaction, the nitro group is meta directing because it Show Answer

Q383) Which of the following conformers for ethylene glycol is most stable? Show Answer

Q384) Which of the following compounds is resistant to nucleophilic attack by hydroxy ion? Show Answer

Q385) The stabilization due to resonance is maximum in : Show Answer

Q386) A mixture of camphor and benzoic acid can be easily separated by Show Answer

Q387) Fractional crystallisations is carried out to separate a mixture of Show Answer

Q388) The type of isomerism observed in urea molecule is : Show Answer

Q389) Which of the following intermediate have the complete octet around the carbon atom? Show Answer

Q390) A neutral divalent carbon intermediate produced by the removal of two attached atoms is called : Show Answer

Q391) Which types of isomerism is shown by 2, 3-dichlorobutane? Show Answer

Q392) Among the following compounds, the most acidic is Show Answer

Q393) Electrophiles are : Show Answer

Q394) On monochlorination of n-pentane, the number of isomers formed is : Show Answer

Q395) Cyclohexane is : Show Answer

Q396) Which of the following is a primary halide? Show Answer

Q397) The percentage of ′s′ character of the hybrid orbital of carbon in ethane, ethane and ethyne respectively
are : Show Answer

Q398) Which is a chiral molecule? Show Answer

Q399) The stability of a carbonium ion depends upon Show Answer

Q400) Bromination of alkanes involves Show Answer

Q401) The isomeric cis-2-butene and trans-2-butene can be distinguished on the basis of : Show Answer

Q402) Lassaigne’s test is not used for the detection of Show Answer

Q403) The simplest formula of a compound containing 50% of element X (at. wt 10) and 50% of element Y (at.
wt. 20) is Show Answer

Q404) n-pentane, iso-pentane, and neo – pentane are examples for isomers of the type Show Answer

Q405) Homolytic fission of C— C bond in ethane gives an intermediate in which carbon is ….hybridized. Show Answer

Q406) Pick out the correct statement from the following and choose the correct answer from the codes given
below
I. Hexa-1, 5-diene is a conjugated diene
II. Prop-1, 2-diene is conjugated diene
III. Hexa-1, 3-diene is a conjugated diene
IV. Buta-1, 3-diene is an isolated diene
V. Prop-1, 2-diene is a cumulative diene Show Answer

Q407) Which among the following is the correct IUPAC name of isoamylene? Show Answer

Q408) Which of the following compounds exhibits geometrical isomerism? Show Answer

Q409) Which one of the following compounds, is most acidic? Show Answer

Q410) An organic compound has carbon and hydrogen percentage in the ratio 6:1 and carbon and oxygen
percentages in the ratio 3:4. The compound has the empirical formula Show Answer

Q411) Among the following the one which does not exhibit functional group isomerism is : Show Answer

Q412) Which one of the following is a secondary alcohol? Show Answer

Q413) Electromeric effect is Show Answer

Q414) The angle of rotation of plane of polarized light depends upon : Show Answer

Q415) Which of the following shows geometrical isomerism? Show Answer

Q416) Which of the following cannot undergo nucleophilic substitution under ordinary conditions? Show Answer

Q417) The C— C bond length of the following molecules is in the order. Show Answer

Q418) Isomerism among compounds due to the migration of a proton is known as : Show Answer

Q419) Removal of hydrogen atom is easier when it is attached to : Show Answer

Q420) The order of stability of carbanions is : Show Answer

Q421) Glycerine contains Show Answer

Q422) Which of the following pairs of carbon skeletons in an example of isomerism? Show Answer

Q423) In the following the most stable conformation of n-butane is : Show Answer

Q424) An electrophilic reagent must have Show Answer

Q425) Which one of the starred carbons is the asymmetric one? Show Answer

Q426) The chemical name of anisole is Show Answer

Q427) How many optically active stereomers are possible for butan-2, 3-diol? Show Answer

Q428) Naphthalene molecule contains : Show Answer

Q429) The first organic compound urea was synthesized in the laboratory by: Show Answer

Q430) Which of the following is not a nucleophile? Show Answer

Q431) Which of the following compounds can exhibit optical isomerism? Show Answer

Q432) Which is the most stable carbocation? Show Answer

Q433) The correct structure of 4-bromo-3-methyl-but-1-ene. Show Answer

Q434) Which method is used to separate sugars? Show Answer

Q435) Sublimation can't be used for purification of Show Answer

Q436) Which of the following is phenyl ethanoate? Show Answer

Q437) Zero inductive effect is shown by : Show Answer

Q438) Which of the following alkyl halides is used as a methylating agent? Show Answer

Q439) Which one of the following has the most nucleophilic nitrogen? Show Answer

Q440) Chlorobenzene is 0, p-directing in electrophilic substituting reaction. The directing influence is explained
by Show Answer

Q441) Which of the following orders regarding relative stability of free radicals is correct? Show Answer

Q442) Carbon tetrachloride has no net dipole moment because of : Show Answer

Q443) The isomers which are interconverted through rotation around a single bond are Show Answer

Q444) The number of optical isomers of pent-3-en-2-ol is : Show Answer

Q445) Dehydrohalogenation of an alkyl halide is a/an Show Answer

Q446) The minimum number of carbon atoms which a ketone may contain is : Show Answer

Q447) What is the formula of tertiary butyl alcohol? Show Answer

Q448) The IUPAC name of neopentane is Show Answer

Q449) Select the strongest bond : Show Answer

Q450) Which of the following molecules is achiral? Show Answer

Q451) An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The
ester formed will be Show Answer

Q452) Which of the following statements is necessarily true in the case of isomeric organic compounds? Show Answer

Q453) Cis - trans, isomers generally Show Answer

Q454) Among the following compounds nitrobenzene, benzene, aniline and phenol, the strongest basic behaviour
in acid medium is exhibited by : Show Answer

Q455) Geometrical isomerism is not shown by : Show Answer

Q456) An optically active compound is : Show Answer

Q457) In Lassaigen's test, the organic compound is fused with a piece of sodium metal in order to Show Answer

Q458) Which of the following sodium compound/compounds are formed when an organic compound containing
both nitrogen and sulphur is fused with sodium? Show Answer

Q459) In hyperconjugation, the atom involved is : Show Answer

Q460) Reactivity of hydrogen atoms attached to different atoms in alkanes has the order : Show Answer

Q461) Which has maximum percentage of chlorine? Show Answer

Q462) Which reaction sequence would be best to prepare 3-chloro-aniline from benzene? Show Answer

Q463) Why is light necessary to bring in chlorination reactions of alkane? Show Answer

Q464) For all practical purposes, influence of inductive effect is neglected after : Show Answer

Q465) Geometrical isomers differ in : Show Answer

Q466) The study of three dimensional structure of molecule is called : Show Answer

Q467) Which of the following contains only three pairs of electrons? Show Answer

Q468) 2-hexyne gives trans-2-hexene on treatment with Show Answer

Q469) Lassaigne’s test for the detection of nitrogen fails in Show Answer

Q470) The relative adsorption of each component of the mixture is expressed in terms of Show Answer

Q471) t-butyl alcohol is Show Answer

Q472) A compound containing 80% C and 20% H is likely to be Show Answer

Q473) Overlap of which of the following atomic orbitals would be maximum to form the strongest covalent bond? Show Answer

Q474) During elimination reactions, the hybrid state of carbon atoms involved in change shows: Show Answer

Q475) Who proposed the tetrahedral mirror image structures to a pair of enantiomers? Show Answer

Q476) Heterolysis of propane gives : Show Answer

Q477) Delocalised electrons are present in Show Answer

Q478) Compounds which rotate plane polarised light in clockwise direction are known as : Show Answer

Q479) Carbanions initiate : Show Answer

Q480) Impure glycerine can be purified by Show Answer

Q481) IUPAC name of urea is : Show Answer

Q482) Which of the following process is not used for the purification of solid impurities? Show Answer

Q483) Dehydration of alcohol is an example of which type of reaction? Show Answer

Q484) The organic liquid that mix freely with water is : Show Answer

Q485) The best method for the separation of naphthalene and benzoic acid from their mixture is Show Answer

Q486) The reagent used in dehydrohalogenation process is : Show Answer

Q487) Hydride shift from C-2 will give the most stable resonance stabilized carbocation as Show Answer

Q488) Hyperconjugation involves overlap of the following orbitals Show Answer

Q489) Most stable carbonium ion is Show Answer

Q490) During a nitration of benzene, the attacking electrophile is Show Answer

Q491) The (R) and (S) enantiomers of an optically active compound differ in Show Answer

Q492) The number of chiral centres in (+) –glucose Show Answer

Q493) Hydrogen cyanide and hydrogen isocyanide are : Show Answer

Q494) Which of the following hydrocarbons is most unsaturated? Show Answer

Q495) Sometimes the behaviour of a compound is explained by assuming that it exists in a world between two or
more different possible structures. This phenomenon is called : Show Answer

Q496) Which one of the following pairs represents stereoisomerism? Show Answer

Q497) The large number of organic compounds is due to: Show Answer

Q498) Formic acid is a stronger acid than acetic acid. This can be explained using Show Answer

Q499) The energy of C— C triple bond in acetylene in kcal is : Show Answer

Q500) In which of the following molecules, the resonance effect is not present? Show Answer

Q501) The tautomeric form which is less stable is called : Show Answer

Q502) The effect involving the complete transfer of a shared pair of electrons to one of the atoms joined by a
multiple bond at the requirement of attacking reagent is called : Show Answer

Q503) Which of the following acids does not exhibit optical isomerism? Show Answer

Q504) Which of the following conformations of cyclohexane is chiral? Show Answer

Q505) Which type of isomerism is shown by propanal and propanone? Show Answer

Q506) The best method to separate the mixture of ortho -and-para nitrophenol (1:1) is Show Answer

Q507) Which of the following does not show electrometric effect? Show Answer

Q508) Shifting of electrons of a multiple bond under the influence of a reagent is called : Show Answer

Q509) 0.4 g of a silver salt of a monobasic orgainc acid gave 0.26 g pure silver on ignition. the molecular weight of
the acid is (atomic weight of silver=108) Show Answer

Q510) Which pair represents chain isomers? Show Answer

Q511) The number of valence electrons in the excited carbon atom is : Show Answer

Q512) A hydrocarbon contains 10.5 g carbon and 1 g hydrogen. Its 2.4 g has 1 L volume at 1 atm and127℃.
Hydrocarbon is Show Answer

Q513) A mixture of oil and water is separated by Show Answer

Q514) The structural formula of methyl aminomethane is : Show Answer

Q515) The number of optically active isomers of tartaric acid are Show Answer

Q516) Which of the following has the highest degree of coordination bond? Show Answer

Q517) A mixture of o-nitrophenol and p-nitrophenol can be separated by Show Answer

Q518) State the hybridization of carbon present in triplet carbene Show Answer

Q519) Which of the following cannot show electromeric effect ? Show Answer

Q520) Hydride ion transfer takes place in Show Answer

Q521) An organic compound contains 29.27% carbon, 5.69 % hydrogen and 65.04% bromine. Its empirical
formula is Show Answer

Q522) The function of soda lime, a mixture of solid NaOH and solid CaO during decarboxylation of carboxylic
acids is : Show Answer

Q523) A racemic mixture is a mixture of : Show Answer

Q524) A mixture of iodine and sodium chloride can be easily separated by Show Answer

Q525) The property by virtue of which a compound can turn the plane of polarization of light is known as : Show Answer

Q526) Correct order of stability is Show Answer

Q527) In the estimation of sulphur in an organic compound, fuming nitric acid is used to convert sulphur into Show Answer

Q528) Which of the following will be chiral? Show Answer

Q529) Which of the following is not a nucleophile? Show Answer

Q530) Least stable conformer of cyclohexane is Show Answer

Q531) The compound isomeric with acetone is : Show Answer

Q532) Which of the chloride is less reactive towards hydrolysis? Show Answer

Q533) Glycerol is an alcohol which can be classified as Show Answer

Q534) The electromeric effect in organic compounds is a : Show Answer

Q535) Copper wire test of halogens is known as Show Answer

Q536) Which of the following is singlet carbine? Show Answer

Q537) Which of the following will be easily nitrated? Show Answer

Q538) Optical isomerism is shown by Show Answer

Q539) Williamson’s synthesis involves Show Answer

Q540) Free radicals can undergo : Show Answer

Q541) Metamers of ethyl propionate are Show Answer

Q542) During addition of bromine on ethene, the first species formed is Show Answer

Q543) Which one is not is IUPAC system? Show Answer

Q544) The compound which exhibits optical isomerism is : Show Answer

Q545) Homologous compounds have : Show Answer

Q546) How many chiral compound are possible on mono chlorination of 2-methyl butane? Show Answer

Q547) Which of the following IUPAC names is correct? Show Answer

Q548) Ethyl acetoacetate shows, which type of isomerism? Show Answer

Q549) Enol content is highest in Show Answer

Q550) The maximum number of stereoisomers possible for 3-hydroxy-2-methyl butanoic acid is : Show Answer

Q551) Which of the following will exhibit cis - trans isomerism? Show Answer

Q552) Which of the following is most reactive towards electrophilic nitration? Show Answer

Q553) Ethylene dichloride and ethylidine chloride are isomeric compounds. The false statement about these
isomers is that they Show Answer

Q554) Which of the following compounds has incorrect IUPAC nomenclature? Show Answer

Q555) The IUPAC name for tertiary butyl iodide is Show Answer

Q556) Geometry of methyl free radical is Show Answer

Q557) Dehydrogenation of ethanol to give ethanal is : Show Answer

Q558) Which one of the following compounds will be most readily dehydrated ? Show Answer

Q559) Among the following compounds (I-III) the correct order of reaction with the electrophile is Show Answer

Q560) Which of the following is an electrophile? Show Answer

Q561) An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum
molecular weight of the compound is Show Answer

Q562) The structure of tertiary butyl carbonium ion is : Show Answer

Q563) A carbonium ion contains : Show Answer

Q564) The formula of 3-chloro-2,2-dimethylbutane is : Show Answer

Q565) Which shows the easier electrophilic substitution in ring? Show Answer

Q566) The number of isomeric pentyl alcohols possible is Show Answer

Q567) Naphthalene can be easily purified by Show Answer

Q568) The correct structure of dimethylbutyne is : Show Answer

Q569) Which of the following is free radical? Show Answer

Q570) Quantitative measurement of nitrogen in an organic compound is done by the method Show Answer

Q571) During pyrolysis of an alkane, C— C bond breaks faster than the C— H bond because : Show Answer

Q572) State of hybridization of carbon atom of carbene in the singlet state is : Show Answer

Q573) The number of 1° and 2°carbon atoms in n-pentane are respectively : Show Answer

Q574) In benzene, all the C - C bonds are of equal length because of : Show Answer

Q575) Nitration of benzene is Show Answer

Q576) Nitrogen containing organic compound when fused with sodium forms Show Answer

Q577) Which of the following is strongest nucleophile? Show Answer

Q578) In Kjeldahl's method for the estimation of nitrogen, the formula used to Show Answer

Q579) The most satisfactory method to separate sugars is to use Show Answer

Q580) The structures that do not actually exist are called : Show Answer

Q581) Which of the following is the most stable carbocation? Show Answer

Q582) Which one of the following compound is most acidic? Show Answer

Q583) The number of carbon atoms present in neopentane are : Show Answer

Q584) The Cl—C—Cl angle in 1,1,2,2-tetrachloroethene and tetrachloromethane respectively will be about : Show Answer

Q585) The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methyl
butane is : Show Answer

Q586) Chromatography technique is used for the separation of Show Answer

Q587) The stability of the carbocation decreases in the order Show Answer

Q588) What will be the compound if two valencies of carbonyl group are satisfied by two alkyl groups? Show Answer

Q589) The most stable carbocation is : Show Answer

Q590) Which of the following belongs to – I group? Show Answer

Q591) Which is most commonly used to dry organic liquids? Show Answer

Q592) In Lassaigne's solution, pink/violet colouration is produced when sodium nitroprusside solution is added.
It indicates the presence of Show Answer

Q593) A carbonium ion is formed when a covalent bond between two atoms in an organic compound undergoes : Show Answer

Q594) Racemic mixture is formed by mixing two Show Answer

Q595) In a solution, solvent can be separated from solute by one of the following process Show Answer

Q596) Buta-1,3-diene and But-2-yne are : Show Answer

Q597) The intermediate during the addition of HCl to propene in the presence of peroxide is : Show Answer

Q598) Which of the following represents neo- pentyl alcohol? Show Answer

Q599) 2-methyl-2-butene will be represented as : Show Answer

Q600) The most abundant organic compound in the world is : Show Answer

Q601) The chain initiating species in free radical chlorination of methane is : Show Answer

Q602) Which of the following belongs to +I group? Show Answer

Q603) Different structures generated due to rotation about, C – C axis, of an organic molecule, are examples of Show Answer

Q604) Which of the following molecules is expected to rotate the plane of plane-polarised light? Show Answer

Q605) Chromatography was discovered by Show Answer

Q606) Sodium nitroprusside when added to an alkaline solution of sulphide ions produces a colouration Show Answer

Q607) Isopentane can form four isomeric mono bromo derivatives. How many of them are optically active? Show Answer

Q608) Which one of the following does not show resonance? Show Answer

Q609) Select the organic compounds aliphatic in nature but burn with smoky flame : Show Answer

Q610) Which of the following is an electrophilic reagent? Show Answer

Q611) A mixture of iron fillings and sulphur cannot be separated by Show Answer

Q612) Isomers of propionic acid are Show Answer

Q613) Reactions involving heterolytic fission are said to proceed via : Show Answer

Q614) Which of the following orders is true regarding the acidic nature of COOH? Show Answer

Q615) Which behaves both as a nucleophile as well as an electrophile? Show Answer

Q616) In which case the carbon-carbon bond length is same? Show Answer

Q617) Incorrect statement is Show Answer

Q618) Which one of the following explain, why propene undergo electrophilic addition with HBr, but not with
HCN? Show Answer

Q619) Select the correct statement about the detection of sulphur in organic compounds Show Answer

Q620) Rotation of plane polarized light can be measured by : Show Answer

Q621) A molecule having three different chiral carbon atoms, how many stereoisomers it will have? Show Answer

Q622) Which of the following is the strongest base? Show Answer

Q623)
Intermediate product formed in the acid catalysed dehydration of n-propyl alcohol is : Show Answer

Q624) Which of the following has the highest nucleophilicity? Show Answer

Q625) Anthracene is purified by Show Answer

Q626) Chiral molecules are those which: Show Answer

Q627) Who is called the ‘Father of Chemistry’? Show Answer

Q628) With a change in hybridization of the carbon bearing the charge, the stability of a carbanion increase in the
order Show Answer

Q629) The total number of alkenes possible by dehydromination of 3-bromo-3-cyclopentylhexane using alcoholic
KOH is Show Answer

Q630) The Cl—C—Cl bond angle in dichloro methane will be : Show Answer

Q631) In the following reaction sequence, the chain initiation steps is : Show Answer

Q632) The most stable carbanion is Show Answer

Q633) If a compound on analysis was found to contain C = 18.5%, H = 1.55%, Cl =55.04% and O = 24.81% then
its empirical formula is Show Answer

Q634) 2-pentanone and 3-methyl-2-butanone are a pair of ….. isomers. Show Answer

Q635) Liebig’s test is used to estimate Show Answer

Q636) In fructose, the possible optical isomers are Show Answer

Q637) Which structure can be explained by taking ground state configuration of atom? Show Answer

Q638) Which one of the following carbanions is the least stable? Show Answer

Q639) Which one of the following is the most energetic conformation of cyclohexane? Show Answer

Q640) The energy difference between the chair and boat form of cyclohexane is : Show Answer

Q641) Addition of HI on double bond of propene yields isopropyl iodide as major product. It is because the
addition proceeds through : Show Answer

Q642) The IUPAC name of neopentane is : Show Answer

Q643) In Carius method of 0.099 g orgainc compound gave 0.287 g AgCl. The percentage of chlorine in the
compound will be Show Answer

Q644) The most common type of reaction in aromatic compounds is Show Answer

Q645) Arrange the following carbocations in order of stability
benzyl allyl methyl vinyl
I II III IV Show Answer

Q646) The prefix name of —SH group in IUPAC system is : Show Answer

Q647) Fractional distillation is a process by which the separation of different fractions from mixture of solution is
carried by making use of the following property of the fractions Show Answer

Q648) Which of the following is an electroplile? Show Answer

Q649) Which of the following is singlet carbine? Show Answer

Q650) Which of the following is the correct order of priority of groups in D-glyceraldehyde? Show Answer

Q651) o-hydroxytoluene and benzyl alcohol are : Show Answer

Q652) Which of the following would react most readily with nucleophiles? Show Answer

Q653) Which group has the highest + Inductive effect? Show Answer

Q654) The Prussian blue colour obtained during the test of nitrogen by Lassaigne;s test is due to the formation of Show Answer

Q655) Which of the following statements is correct? Show Answer

Q656) Which of the following possesses an sp-hybridized carbon in its structure? Show Answer

Q657) Di-chloroacetic acid is a stronger acid than acetic acid.
This due to occurrence of Show Answer

Q658) In which of the following ways does the hydride ion tend to function? Show Answer

Q659) The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC
system of nomenclature is Show Answer

Q660) Which of the following statements is incorrect? Show Answer

Q661) For the purification, isolation and separation of organic compounds, the latest technique followed is Show Answer

Q662) Arrange p-toluidine (I) N,N-dimethyl-p- toluidine (II) p- nitroaniline (III) and aniline (IV) in order of
decreasing basicity Show Answer

Q663) The reagent showing addition on alkene against the Markownikoff’s rule of : Show Answer

Q664) Carbocation can undergo : Show Answer

Q665) Lactic acid is : Show Answer

Q666) Of the following compounds which will have a zero dipole moment? Show Answer

Q667) Isomerism exhibited by acetic acid and methyl formate is : Show Answer

Q668) In IUPAC suffix name of —COX is : Show Answer

Q669) Which one of the following compounds is most reactive towards nucleopilic addition? Show Answer

Q670) Which of the following is the most stable cation? Show Answer

Q671) Which of the following species is not electrophilic in nature? Show Answer

Q672) The Beilstein test for organic compound is used to detect Show Answer

Q673) Which of the following statements is not characteristic of free radical chain reaction? Show Answer

Q674) The presence of carbon in an organic compound is detected by heating it with Show Answer

Q675) Which one is an elimination reaction? Show Answer

Q676) Identify the compound that exhibits tautomerism Show Answer

Q677) Which of the following is an electrophile? Show Answer

Q678) The formula of ethanenitrile is : Show Answer

Q679) Which of the following acids shows stereoisomerism? Show Answer

Q680) Mark the incorrect statement in nitrogen Kjeldahl's method of estimation Show Answer

Q681) Which of the following orders is correct regarding the –I effect of the substituents? Show Answer

Q682) The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is Show Answer

Q683) Lactic acid in which a methyl group, a hydroxyl group, a carboxylic acid group and a hydrogen atom are
attached to a central carbon atom shows optical isomerism due to the molecular geometry at the : Show Answer

Q684) Which of the following process is suitable for the purification of aniline? Show Answer

Q685) Maleic and fumaric acids are : Show Answer

Q686) Which one is least reactive in a nucleophile substitution reaction? Show Answer

Q687) Number of tertiary carbon atoms in tertiary butyl alcohol is : Show Answer

Q688) The correct sequence of steps involved in the mechanism of Cannizzaro’s reaction is Show Answer

Q689) Propanol and propanone are Show Answer

Q690) Diastereomers can be separated by : Show Answer

Q691) Angle strain in cyclopropane is Show Answer

Q692) A mixture of acetone and methanol can be separated by Show Answer

Q693) The oxygen atom in phenol Show Answer

Q694) 2-methylpent-3-enoic acid shows : Show Answer

Q695) Pyridine is : Show Answer

Q696) The reason for the loss of optical activity of lactic acid when – OH group is changed by H is that Show Answer

Q697) Which of the following compounds exhibits rotamers? Show Answer

Q698) The correct order of nucleophilicity among the following is : Show Answer

Q699) Ammonia molecule is : Show Answer

Q700) 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon hydrocarbon is Show Answer

Q701) Which one of the following is most reactive towards electrophilic attack? Show Answer

Q702) Identify, which of the below does not possess any element of symmetry? Show Answer

Q703) Geometrical isomerism is shown by : Show Answer

Q704) When thiourea is heated with metallic sodium, the compound which can't be formed is Show Answer

Q705) The racemisation of optically active compounds is driven by : Show Answer

Q706) The correct name for the following hydrocarbon is Show Answer

Q707) Which of the following is the most stable radical? Show Answer

Q708) The number of 4° carbon atoms in 2,2,4,4-tetramethylpentane : Show Answer

Q709) Inductive effect involves Show Answer

Q710) Compounds whose molecules are superimposable on their mirror images even though they contain
asymmetric carbon atoms or chiral centres are known as : Show Answer

Q711) Percentage of hydrogen is maximum in . Show Answer

Q712) Which of the following has most acidic hydrogen? Show Answer

Q713) Ease of abstraction of hydrogen is greater when attached to : Show Answer

Q714) Steam distillation is based on the fact that vaporisation of organic liquid takes place at Show Answer

Q715) The hybridization of central carbon atom in 1,2- propadiene (allene) is Show Answer

Q716) The kind of delocalisation involving sigma bond is called Show Answer

Q717) In the case of homologous series of alkanes, which one of the following statements is incorrect? Show Answer

Q718) Which of the following reagents will be fruitful for separating a mixture of nitrobenzene and aniline? Show Answer

Q719) The name formic acid was given for HCOOH because it was prepared from : Show Answer

Q720) 2, 3-dimethyl hexane contains ….. tertiary ….. secondary and ……primary carbon atmos, respectively Show Answer

Q721) Which one of the following is the correct formula for dichlorodiphenyltrichloro ethane? Show Answer

Q722) How many sigma and pi bonds are there in the molecule of di cyano ethane (CN - CH - CH - CN)? Show Answer

Q723) Out of the following, the alkene that exhibits optical isomerism is Show Answer

Q724) Carbanion can undergo : Show Answer

Q725) Percentage composition of an organic compound is as follows
C=10.06, H=0.84, Cl=89.10
Which of the following corresponds to its molecular formula if the vapour density is 60.0? Show Answer

Q726) Which of the following is most reactive towards nucleophilic substitution reaction? Show Answer

Q727) Which among the following statements is correct with respect to the optical isomers? Show Answer

Q728) Which of the following is most basic? Show Answer

Q729) Which of the following compounds is not chiral? Show Answer

Q730) What is the number of possible optical isomers in glucose? Show Answer

Q731) In which reaction addition takes place according to Markownikoff’s rule? Show Answer

Q732) Presence of halogen in organic compounds can be detected using Show Answer

Q733) The bond energy for catenation next to carbon is : Show Answer

Q734) The hydrolysis of alkyl halides by aqueous NaOH is best termed as : Show Answer

Q735) Which of the following compounds exhibit stereoisomerism? Show Answer

Q736) The + I.E(inductive effect) is shown by : Show Answer

Q737) In paper chromatography Show Answer

Q738) Which one of the following is not found in alkenes? Show Answer

Q739) Select the correct statement : Show Answer

Q740) A compound contains 2 dissimilar asymmetric carbon atoms. The number of optically active isomers is : Show Answer

Q741) The inductive effect Show Answer

Q742) If there is no rotation of plane polarised light by a compound in a specific solvent, though to be chiral, it
means that : Show Answer

Q743) Formation of ethylene from acetylene is an example of Show Answer

Q744) Which of the following is nucleophilic addition reaction? Show Answer

Q745) The reagent used in dehalogenation process is : Show Answer

Q746) Benzaldoxime exists in how many forms? Show Answer

Q747) Resonance arises due to the : Show Answer

Q748) Which one of the following pair represents stereoisomerism? Show Answer

Q749) Stereoisomerism is of two types, geometrical and
optical. Show Answer

Q750) Which of the following compounds is expected to be optically active? Show Answer

Q751) Which of the following is least reactive in a nucleophilic substitution reaction? Show Answer

Q752) During debromination of meso-dibromo-butane, the major compound formed is : Show Answer

Q753) What is the empirical formula of a compound having 40% carbon, 6.66% hydrogen and 53.34% oxygen? Show Answer

Q754) Which of the following can act as an nucleophile? Show Answer

Q755) In Lassaigne’s test, a blue colour is obtained if the organic compound contains nitrogen. The blue colour is
due to Show Answer

Q756) According to Gahn-Ingold-Prelog sequence rules, the correct order of priority for the given group is Show Answer

Q757) How many chiral isomers can be drawn from 2-bromo, 3-chloro butane? Show Answer

Q758) Glycerol can be separated from spent-lye in soap industry by Show Answer

Q759) Correct gradation of basic charactor Show Answer

Q760) An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular
formula of compound is Show Answer

Q761) Vital force theory of the origin of organic compounds was discarded by : Show Answer

Q762) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff
addition to alkenes because : Show Answer

Q763) One is oxidizing and the other is reducing Show Answer

Q764) Which of the following is the correct order of stability of different conformations of butane? Show Answer

Q765) Glucose and fructose are : Show Answer

Q766) Eelipsed and staggered forms of n-butane are called a pair of : Show Answer

Q767) Arrange the following in order of increasing dipole moment (I) Toluene (II)m-dichlorobenzene (III) o-
dichlorobenzene (IV) p-dichlorobenzene : Show Answer

Q768) In butane, which of the following forms has the lowest energy? Show Answer

Q769) Molecular mass of a volatile substances may be obtained by Show Answer

Q770) Which is not deflected by a non-uniform electrostatic field? Show Answer

Q771) Correct order of nucleophilicity is Show Answer

Q772) Due to the presence of an unpaired electron free radicals are Show Answer

Q773) Which of the following will have meso isomers also? Show Answer

Q774) The addition of HBr on butene-2 in presence of peroxide follow the: Show Answer

Q775) Which represents nucleophilic aromatic substitution reaction? Show Answer

Q776) Ethoxy ethane and methoxy propane are : Show Answer

Q777) Which of the following aromatic acid is most acidic? Show Answer

Q778) The hybridization of carbon in diamond, graphite and acetylene is in the order: Show Answer

Q779) Which is optically active? Show Answer

Q780) Which of the following statement is wrong? Show Answer

Q781) What kind of isomerism is possible for 1-chloro-2-nitroethene? Show Answer

Q782) Acetonitrile is Show Answer

Q783) Formation of cyanohydrin from a ketone is an example of Show Answer

Q784) An organic compound which produces a bluish green coloured flame on heating in presence of copper is Show Answer

Q785) The compound abd C—C abd will exist in : Show Answer

Q786) The C - H bond distance is longest in Show Answer

Q787) The yield in organic reactions is generally poor because the reactions are : Show Answer

Q788) Which of the following resonating structures of 1-methoxy-1, 3-butadiene is least stable? Show Answer

Q789) A student named the compound as 1,4-butadiene : Show Answer

Q790) The number of different substitution products possible when ethane is allowed to react with bromine is
sunlight are : Show Answer

Q791) Phenol is more acidic than Show Answer

Q792) During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into Show Answer

Q793) The structure representing a heterocyclic compound is : Show Answer

Q794) Which of the following reactions is an example of nucleophilic substitution reaction? Show Answer

Q795) In which of the following species the central carbon atom is negatively charged? Show Answer

Q796) Optically active compound among the following is : Show Answer

Q797) Which of the following compounds will be most reactive towards nucleophilic addition reaction? Show Answer

Q798) n-pentane and neopentane are : Show Answer

Q799) The IUPAC name of acryldehyde is Show Answer

Q800) Due to presence of an unpaired electron, free radicals are Show Answer

Q801) 2-methylpent-3-ene is a chiral because it has : Show Answer

Q802) Which of the following molecules contain asymmetric carbon atom? Show Answer

Q803) Cyclobutane and butene-1 are : Show Answer

Q804) Which of the following is not true for carbanions? Show Answer

Q805) Which of the following structures permits cis-trans isomerism? Show Answer

Q806) Which one of the following compound will show optical iosmerism? Show Answer

Q807) The Kolbe’s electrolysis proceeds via Show Answer

Q808) Which of the following statements is not correct? Show Answer

Q809) Adsorbent is made of ... in TLC Show Answer

Q810) The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen
was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium
hydroxide solution for complete neutralization. the organic compound is Show Answer

Q811) The structure remaining after one H is removed from hydrocarbon is : Show Answer

Q812) Tautomerism is exhibited by Show Answer

Q813) Which of the following statements is incorrect? Show Answer

Q814) Base strength of, Show Answer

Q815) Which of the following Fischer’s projection formula is identical to D-glyceraldehyde? Show Answer

Q816) Among the following the dissociation constant is highest for Show Answer

Q817) Which of the following is a dynamic isomerism? Show Answer

Q818) Which among the following statements is correct with respect to the optical isomers? Show Answer

Q819) Duma's method involves the determination of nitrogen content in the organic compound in the form of Show Answer

Q820) n- pentane and 2-methyl butane are a pair of Show Answer

Q821) Amongst the following the compound that can most readily get sulphonated is Show Answer

Q822) In E2 elimination, some compounds follow Hofmann’s rule which means: Show Answer

Q823) How many asymmetric carbon atoms are present in
(i) 1, 2-dimethylcyclohexane
(ii) 3-methylcyclopentane and
(iii) 3-methylcyclohexene? Show Answer

Q824) Which of the following is a chiral compound? Show Answer

Q825) The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is Show Answer

Q826) Vinyl alcohol and acetaldehyde are : Show Answer

Q827) Stereoisomers (geometrical or opticals) which are neither superimposable nor mirror image to each other
are called : Show Answer

Q828) Which one of the following will show optical isomerism? Show Answer

Q829) Chloroacetic acid is a stronger acid than acetic acid. This can be explained using Show Answer

Q830) The basicity of aniline is less than that of cyclohexylamine. This is due to Show Answer

Q831) Dehydration of alcohol usually goes by Show Answer

Q832) Geometrical isomerism is possible in Show Answer

Q833) The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is Show Answer

Q834) Ethers are isomeric with Show Answer

Q835) Vinyl chloride undergoes Show Answer

Q836) Fischer projection indicates : Show Answer

Q837) Acetone and propen-2-ol are : Show Answer

Q838) The number of stereoisomers obtained by bromination of trans - 2 -butene is? Show Answer

Q839) The compound which forms one monochloro product when treated with chlorine is : Show Answer

Q840) Maleic acid and fumaric acid are Show Answer

Q841) Which represents the condensed formula for pentanes? Show Answer

Q842) Which of the substance is purified by sublimation? Show Answer

Q843) The halogen compound which most readily undergoes nucleophilic substitutions is Show Answer

Q844) Which of the following order is correct regarding the acidity of carboxylic acids? Show Answer

Q845) Reaction of methyl bromide with aqueous sodium hydroxide involves Show Answer

Q846) The following compound will undergo electrophilic substitution more readily than benzene Show Answer

Q847) Which of the following elements can't be detected by direct tests? Show Answer

Q848) Position isomerism is shown by : Show Answer

Q849) Formulae of phenyl carbinol and chloral are respectively : Show Answer

Q850) The reaction of sodium ethoxide with iodoethane to from diethyl is termed as Show Answer

Q851) The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate
solution gives a black precipitate. The organic compound contains Show Answer

Q852) The silver salt of a monobasic acid on ignition gave 60% of Ag. The molecular weight of the acid is Show Answer

Q853) The resonating structures : Show Answer

Q854) How many optically active stereoisomers are possible for butane-2, 3-diol? Show Answer

Q855) Removal of a hydride ion from a methane molecule will give a: Show Answer

Q856) Which of the following will have a meso-isomer also? Show Answer

Q857) Which chlorine atom is more electronegative in the following? Show Answer

Q858) The resonating structures : Show Answer

Q859) The optical isomers, which are not enantiomers, are called Show Answer

Q860) Which of the following orders is correct regarding the acidity of carboxylic group? Show Answer

Q861) Geometrical isomerism is shown by Show Answer

Q862) Which one of the following is s-butyl phynylvinyl methane? Show Answer

Q863) Bicyclo (1,1,0) butane is Show Answer

Q864) The reaction of sodium ethoxide with iodoethane to from diethyl is termed as Show Answer

Q865) Which of the following is most reactive towards elimination reaction? Show Answer

Q866) The number of isomeric hexanes is Show Answer

Q867) The substitution reaction among the following is Show Answer

Q868) The most stable carbocation is Show Answer

Q869) Which of the following statements is not correct? Show Answer

Q870) How many chiral carbon atoms are present in 2, 3, 4- trichloropentane? Show Answer

Q871) Which one of the following compounds is most polar? Show Answer

Q872) Geometrical isomerism is not shown by Show Answer

Q873) The change in optical rotation with time of freshly prepared solution of sugar is known as: Show Answer

Q874) Which of the following does not show stereo isomerism? Show Answer

Q875) One of the following compounds exhibit geometrical iosmerism Show Answer

Q876) Which one of the following shows functional isomerism? Show Answer

Q877) In the reaction of phenol with chloroform and aqueous solution of NaOH at 70°C, the electrophile attacking
the ring is Show Answer

Q878) The production of an optically active compound from a symmetric molecule without resolution in termed
as : Show Answer

Q879) Which of the following statement is not applicable to Beilstein test? Show Answer

Q880) Essential oils can be isolated by Show Answer

Q881) Mesomeric effect involves delocalisation of Show Answer

Q882) Which of the following species is paramagnetic in nature? Show Answer

Q883) Isobutyl chloride is : Show Answer

Q884) Which one of the following compounds is capable of existing in a meso form? Show Answer

Q885) Geometrical isomerism is caused : Show Answer

Q886) Lassaigne's test is used for the detection of Show Answer

Q887) Which of the following is arranged according to the nature indicated? Show Answer

Q888) Example of geometrical isomerism is Show Answer

Q889) Which of the following is an example of elimination reaction? Show Answer

Q890) Which nomenclature in IUPAC is not correct? Show Answer

Q891) The C—C bond angle in cyclopropane is : Show Answer

Q892) Absolute alcohol cannot be obtained by simple fractional distillation because Show Answer

Q893) Racemic compound has Show Answer

Q894) In case of a homologous series each member differs from the preceding or the succeeding member by : Show Answer

Q895) Vaccum distillation is used to purify liquids which Show Answer

Q896) Which of the following is the weakest base? Show Answer

Q897) The structure which has positive charge on the oxygen atom : Show Answer

Q898) Statement 1: Lessaigne's test is the for nitrogen only
Statement 2: If halogens are present in organic compound, it react with sodium to form sodium halides
which dissolves in water Show Answer

Q899) Statement 1: Benzoic acid is purified by sublimation process
Statement 2: Sublimation process is very useful in separating a volatile solid from a non-volatile solid Show Answer

Q900) Statement 1: The molality of the solution does not change with change in temperature.
Statement 2: The molality of the solution is expressed in units of moles per 1000 g of solvent. Show Answer

Q901) Statement 1: ‘A Victor Mayer tube’ of hard glass, having a side-tube, leading to the arrangement for
collection of displaced air over water.
Statement 2: An outer jacket of copper, containing a liquid boiling at nearly 30℃ higher than the
substance whose molecular mass is to be determined Show Answer

Q902) Statement 1: Normally and molarity can be calculated from each other.
Statement 2: Normally is equal to the product of molarity and n. Show Answer

Q903) Statement 1: Carbanion like ammonia have pyramidal shape
Statement 2: The carbon atom carrying negative charge has an octet of electrons Show Answer