Practice Test


Q1) Petroleum is found Show Answer


Q2) The conversion of liquid hydrocarbon into a mixture of gaseous compounds by heat alone is known as Show Answer


Q3) Natural gas is a mixture of Show Answer


Q4) Petrol or gasoline used as an automobile fuel is a mixture of Show Answer


Q5) Out of the following fractions of petroleum the one having the lowest boiling point is Show Answer


Q6) Most of the hydrocarbons from petroleum are obtained by Show Answer


Q7) An ocatane number 100 is given to Show Answer


Q8) Tetraethyl lead is used as Show Answer


Q9) On cracking petrol we get Show Answer


Q10) The source of kerosene is Show Answer


Q11) Oil obtained from petroleum is called Show Answer


Q12) A knocking sound is produced more in the engine when the fuel contains mainly Show Answer


Q13) The gas believed to be the cause of explosion in coal-mines Show Answer


Q14) The synthesis gas is Show Answer


Q15) Octane number is Show Answer


Q16) The flash point in India is fixed at Show Answer


Q17) Octane number of 2,2,3-trimethylbutane has been assumed to be Show Answer


Q18) Which among the following are used as catalyst in cracking Show Answer


Q19) Indane is Show Answer


Q20) Which of the following is not a mixture of hydrocarbons Show Answer


Q21) Octane number is related to the petroleum product Show Answer


Q22) Which of the following is not a petroleum product. Show Answer


Q23) Gasoline has composition Show Answer


Q24) The tar which is used to make roads is a solid known as Show Answer


Q25) Cetane number of diesel fuel increases with the addition of Show Answer


Q26) Which of the following has highest octane number Show Answer


Q27) Octane number can be changed by Show Answer


Q28) The chemical added to leaded petrol to prevent the deposition of lead in the combustion chamber is : Show Answer


Q29) A fuel has the same knocking property as a mixture of 70% iso -octane (2,2, 4 - Trimethylpentane) and 30% n-heptane by volume. The octane number of the fuel is Show Answer


Q30) Which of the following substances is used as an antiknock compound Show Answer


Q31) Octane number is zero for Show Answer


Q32) Which one of the following has lowest octane number ? Show Answer


Q33) Marsh gas mainly contains Show Answer


Q34) Photochemical chlorination of alkaline is initiated by a process of Show Answer


Q35) Electrolysis of potassium acetate given Show Answer


Q36) The substance that would not at all be formed during the reaction of methane and chlorine in the presence of sunlight is Show Answer


Q37) Among the paraffins it is generally found that with an increase in the molecular weight Show Answer


Q38) Which reagent can be used to convert, halides, alcohols, carbonyl compounds, acids, etc., to alkane. Show Answer


Q39) Decarboxylation of isobutyric acid leads to Show Answer


Q40) The product obtained when methyl magnesium bromide reacts with methyl alcohol Show Answer


Q41) Hexachoroethane is also called Show Answer


Q42) Halogenation of alkanes is an example of Show Answer


Q43) The addition of oxygen gas to reaction mixture of chlorine and methane (photochemical chlorination) Show Answer


Q44) As compared to melting points even carbon chain isomers, the melting points of odd carbon chain alkanes are Show Answer


Q45) Methyl bromide heated with zinc in closed tube produces Show Answer


Q46) Paraffins dissolve in Show Answer


Q47) The most reactive alkane is Show Answer


Q48) During Wurtz reaction, which of the following is sometimes also obtained because of decomposition of free radicals Show Answer


Q49) Bromination of an alkane as compared to chlorination proceeds Show Answer


Q50) How many monochlorobutanes will be obtained on chlorination of n-butane ? Show Answer


Q51) Hydrocarbon which is liquid at room temperature is Show Answer


Q52) The chemicals and the reaction conditions required for the preparation of ethane are Show Answer


Q53) Which of the following method is most appropriate for the manufacture of methane ? Show Answer


Q54) Reaction of alkanes with halogens is explosive in case of Show Answer


Q55) When an aqueous solution containing sodium acetate and sodium propionate is electrolysed we get Show Answer


Q56) On treating a mixture of two alkyl halides with sodium metal in dry ether, 2-methylpropane was obtained. The alkyl halides are Show Answer


Q57) The most stable free radical among the following is Show Answer


Q58) The order of reactivity of halogens in aliphatic substitution reactions is Show Answer


Q59) In Wurtz reaction the reagent used is Show Answer


Q60) Pure methane can be produced by Show Answer


Q61) On mixing certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloroalkane. The alkane is Show Answer


Q62) Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon ? Show Answer


Q63) The highest boiling point is expected for Show Answer


Q64) A mixture of ethyl iodide and n-porpyl iodide is subjected to Wurtz reaction. The hydrocarbon which will not be formed is Show Answer


Q65) What would be the product formed when 1-Bromo-3-chlorocyclobutane reacts with two equivalents of metallic sodium in ether ? Show Answer


Q66) 2-Methylbutane on reaction with bromine in the presence of sunlight gives mainly Show Answer


Q67) Ethylene can be prepared by electrolysis of an aqueous solution of Show Answer


Q68) Propene on reaction with methylene iodide in presence of Zn - Cu couple gives Show Answer


Q69) The alkene which on ozonolysis yields acetone only is Show Answer


Q70) An alkene, obtained by the dehydration of an alcohol, (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is Show Answer


Q71) Ethylene forms ethylene chorohydrin by the action of Show Answer


Q72) The type of isomerism not exhibited by alkenes is Show Answer


Q73) Addition of ICI on propene gives the product Show Answer


Q74) Ethylene reacts with sulphur monochloride to give Show Answer


Q75) The reaction of ethene with oxygen in presence of a silver catalyst gives Show Answer


Q76) Addition of halogen acid occurs at slowest rate in Show Answer


Q77) Propene on reaction with diazomethane in presence of UV radiations gives Show Answer


Q78) The presence of unsaturation in organic compounds can be tested with Show Answer


Q79) Propane-1-ol can be prepared from propene by Show Answer


Q80) A hydrocarbon reacts with hyochlorous acid to give 2-choroethanol. The hydrocarbon is Show Answer


Q81) Which one of the following heptanols can be dehydrated to hept-3-ene only ? Show Answer


Q82) Hydrolosis of ozonide of but-l-ene gives Show Answer


Q83) Pent-1-ene with HCl gives Show Answer


Q84) The product formed by the action of chlorine on ethene in saturated solution of KBr is/are Show Answer


Q85) Addition of Hl on double bond of propene yields iso-propyl iodide as major product. It is because the addition proceeds through Show Answer


Q86) For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to Show Answer


Q87) Lewsite is : Show Answer


Q88) The conversation of 2,3-dibromobutane to 2-butene with Zn is Show Answer


Q89) Which doesn't follow Markownikoff's rule ? Show Answer


Q90) Dehydrohalogenation in presence of OH is correctly represented by Show Answer


Q91) Which of the following requires free radical intermediates ? Show Answer


Q92) Which of the following does not show geometrical isomerism ? Show Answer


Q93) Among the following compounds which can be dehydrated very eaisly is Show Answer


Q94) Acid catalysed hydration of alkenes except ethene leads to the formation of Show Answer


Q95) Anti-Markownikoff's addition of HBr is not observed in Show Answer


Q96) Baeyer's reagent is Show Answer


Q97) 1-Chlorobutane on reaction with alcoholic potash gives Show Answer


Q98) Ozonolysis of 2,3-dimethyl-1butene followed by reduction with zinc and water gives Show Answer


Q99) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti Markownikoff's addition to alkenes because Show Answer


Q100) The reaction of propene with HOCl proceeds via the addition of Show Answer


Q101) The best method to perpare cyclohexene from cyclohexanol is by using Show Answer


Q102) Which of the following reactions is shown by alkynes Show Answer


Q103) Number of acidic hydrogen atom in
but-1-yne- is Show Answer


Q104) By the action of hydrobromic acid on ethyne we get Show Answer


Q105) Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of Show Answer


Q106) Acetylene can be converted to higher alkynes using the following sequence of reaction Show Answer


Q107) Acetylenic hydrocarbons are acidic because Show Answer


Q108) An anaesthetic naracylene is commercial name of Show Answer


Q109) The gas which is used for artificial ripening of fruits is Show Answer


Q110) The compound formed when silver powder is heated with chloroform Show Answer


Q111) Acetylene gives Show Answer


Q112) Tetrabromoethane on treatment with Zn gives Show Answer


Q113) What is formed when calcium carbide reacts with heavy water Show Answer


Q114) When acetylene is treated with HBr, the product is Show Answer


Q115) In acetylene molecule, the two carbon atoms are linked by Show Answer


Q116) Catalyst used in dimerisation of acetylene to prepare chloroprene is Show Answer


Q117) Which of the following gives propyne on hydrolysis ? Show Answer


Q118) In its reaction with silver nitrate acetylene shows Show Answer


Q119) Which one of these will not react with acetylene ? Show Answer


Q120) What is the product formed when acetylene reacts with hypochlorous acid ? Show Answer


Q121) Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne Show Answer


Q122) Which of the following species is most stable ? Show Answer


Q123) Which of the following in an explosive ? Show Answer


Q124) Among the following statements on the nitration of aromatic compounds, the false one is Show Answer


Q125) Which among the following is the strongest ortho-para directing group ? Show Answer


Q126) The correct order of reactivity towards electrophilic substitution is Show Answer


Q127) The correct sequence of activating power of a group in benzene is Show Answer


Q128) Among the following groups, which deactivates benzene ring for electrophilic substitution ? Show Answer


Q129) In Etard's reaction toluene is oxidised to benzaldehyde using Show Answer


Q130) Benzene is converted to toluene by Show Answer


Q131) In the halogenation of aromatic nucleus, the halogen carrier, is used to generate the species Show Answer


Q132) In nitrating mixture concentrated sulphuric acid is used Show Answer


Q133) The nitro group in nitrobenzene is Show Answer


Q134) The number of double bonds in BHC (gammexane) is Show Answer


Q135) Benzene easily shows Show Answer


Q136) Anhydrous aluminium chloride is used in Friedel Crafts reaction because it is Show Answer


Q137) Which of the following is used in Friedel Crafts acylation reaction ? Show Answer


Q138) When benzene is treated with CO and HCl in presence of anhydrous aluminium chloride, benzaldehyde is formed. This reaction is known as Show Answer


Q139) Benzene is formed by the electrolysis of Show Answer


Q140) In Friedel Crafts reaction benzene is Show Answer


Q141) Which of the following conditions are suitable for preparing benzyl chloride from toluene Show Answer


Q142) Which group is meta directing Show Answer


Q143) Ozonolysis of benzene gives Show Answer


Q144) Friedel Crafts reaction is not possible in Show Answer


Q145) Which of the following compounds reacts slower than benzene in electrophilic bromination. Show Answer


Q146) Which can be used for carrying out electrophilic aromatic substitution Show Answer


Q147) Benzene is obtained by Show Answer


Q148) Most common reactions of benzene and its derivatives are Show Answer


Q149) Which of the following can not be used in Friedel Crafts reactions ? Show Answer


Q150) The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzenes (II) and nitobenzene (III) is Show Answer


Q151) What is the end product of nitration of toluene ? Show Answer


Q152) Which of the following possesses the highest melting point ? Show Answer


Q153) Benzene is obtained by fractional distillation of Show Answer


Q154) The treatment of benzene with isobutene in the presence of sulphuric acid gives Show Answer


Q155) The most reactive among the following towards sulphonation is Show Answer


Q156) Which of the following species participate in sulphonation of benzene ring ? Show Answer


Q157) Which one of these is not compatible with arenes ? Show Answer


Q158) The compound prepared by a substitution reaction of benzene is Show Answer


Q159) Gammexane is Show Answer


Q160) Heating a mixture of sodium benzoate and soda lime gives Show Answer


Q161) Benzene does not undergo addition reaction easily because Show Answer


Q162) The bond order of individual carbon-carbon bonds in benzene is Show Answer


Q163) Baeyar's reagent is Show Answer


Q164) Lindane can be obtained by reaction of benzene with Show Answer


Q165) Which of the following will be easily nitrated ? Show Answer


Q166) In catalytic reduction of hydrocarbons which catalyst is mostly used Show Answer


Q167) Position of double bond in alkenes can be identified by Show Answer


Q168) Propane cannot be prepared from which reaction ? Show Answer


Q169) Which of the following compounds are not arrange in order of decreasing reactivity towards electrophilic substitution ? Show Answer


Q170) Toluene on reaction with chlorine in presence of sunlight gives Show Answer


Q171) Which of the following compound will give only acetaldehyde after ozonolysis ? Show Answer


Q172) Which is most sensitive towards addition reaction? Show Answer


Q173) On monochlorination of 2-methylbutane the total number of chiral compounds formed is Show Answer


Q174) When phenyl magnesiumbromide reacts with t-butanol, the product would be Show Answer


Q175) The number of stereoisomers obtained by bromination of trans - 2 butene is Show Answer


Q176) Of the five isomeric hexanes, the isomer which can give can two monochlorinated compound is Show Answer


Q177) Which of the following reactions will yield 2,2 -dibromopropane ? Show Answer


Q178) The hydrocarbon which can react with sodium in liquid ammonia is Show Answer


Q179) Which of the following is not a petroleum product? Show Answer


Q180) A knocking sound is produced more in the engine when the fuel contains mainly: Show Answer


Q181) Reaction of HBr with propene in presence of peroxides gives: Show Answer


Q182) The reaction conditions used for converting 1,2-dibromopropane to propylene are Show Answer


Q183) The relationship between acetylene and benzene is comparable to the relationship between propyne and Show Answer


Q184) The ozonolysis of ethylene, acetylene and propylene respectively gives: Show Answer


Q185) Alkyl halides react with dialkyl copper reagents to give Show Answer


Q186) The gas which is used for the artificial ripening of fruits is: Show Answer


Q187) Which of the following is produced when coal is subjected to destructive distillation? Show Answer


Q188) Methyl bromide heated with zinc in closed tube produces: Show Answer


Q189) The reaction of alkanes with halogen is explosive in the case of: Show Answer


Q190) Which of the following is unsymmetrical alkene? Show Answer


Q191) Which of the statement is wrong for alkanes? Show Answer


Q192) Propane cannot be prepared from which reaction? Show Answer


Q193) Nitrating mixture is Show Answer


Q194) Which of the following is not a mixture of hydrocarbons? Show Answer


Q195) Which of the following has the maximum heat of hydrogenation? Show Answer


Q196) Position of double bond in alkenes is identified by Show Answer


Q197) Which of the following reagent can distinguish between 1-butyne and 2-butyne? Show Answer


Q198) Reaction of HBr with propene in the presence of peroxide gives Show Answer


Q199) The middle oil fraction of coal-tar distillation contains: Show Answer


Q200) Acrylic emulsion in paints is a polymer of: Show Answer


Q201) An anaesthetic narcylene is commercial name of: Show Answer


Q202) What volume of methane (NTP) is formed from 8.2 g of sodium acetate by fusion with sodalime? Show Answer


Q203) When methyl iodide is treated with sodium in ethereal solution, it gives Show Answer


Q204) 2-methylpentene 2 on ozonolysis will give: Show Answer


Q205) 2-Hexyne gives trans-2-hexene on treatment with: Show Answer


Q206) Which of the following will give three mono-bromo derivatives? Show Answer


Q207) In a reaction if half of the double bond is broken and two new bonds are formed, this is a case of: Show Answer


Q208) Which represents a cyclic alkane? Show Answer


Q209) According to Huckel's rule an aromatic compound must possess Show Answer


Q210) Acetylene gives: Show Answer


Q211) 1,1,2,2-tetrabromoethane on heating with Zn powder in alcohol finally gives: Show Answer


Q212) The carbide which reacts with water to form ethyne is Show Answer


Q213) Which statement is not correct in case of ethane? Show Answer


Q214) When ethyl chloride and alcoholic KOH are heated, the compound obtained is Show Answer


Q215) Which of the following will react with sodium metal? Show Answer


Q216) When the boiling point of the first ten normal alkanes are plotted, the graph looks like: Show Answer


Q217) Which is generally used as reducing agent in organic chemistry? Show Answer


Q218) Alkynes can be reduced to alkenes by hydrogenation in presence of: Show Answer


Q219) Which reagent distinguishes ethylene from acetylene? Show Answer


Q220) By heating tetraethyl ammonium hydroxide, the product formed are: Show Answer


Q221) Addition of ICl on propene gives the product: Show Answer


Q222) Which of the following alkenes gives on acetaldehyde on ozonolysis? Show Answer


Q223) Direct fluorination of alkanes is not made because: Show Answer


Q224) On monochlorination of n-pentane, the number of isomers formed is: Show Answer


Q225) Which of the following is the predominant product in the reaction of HOBr with propene? Show Answer


Q226) Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of: Show Answer


Q227) The reaction of an aromatic halogen compound with an alkyl halide in presence of sodium in ether is called Show Answer


Q228) How many isomeric forms of pentane exist? Show Answer


Q229) Alkanes mainly show reactions involving: Show Answer


Q230) Ozonolysis of an organic compound A produces acetone and propionaldehyde in equimolar mixture. Identify A from the following compounds. Show Answer


Q231) The compound that is most reactive towards electrophilic nitration is Show Answer


Q232) One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is Show Answer


Q233) The conversion of propene to propanol is … type of reaction. Show Answer


Q234) An alkane of mol. weight 72 gives on monochlorination only one product. Name the alkane: Show Answer


Q235) The number of disubstituted products of benzene is Show Answer


Q236) Electrolysis of an aqueous solution of sodium acetate, yields Show Answer


Q237) Propyne on passing through red hot copper tube forms Show Answer


Q238) Among the following, the compound that be most readily sulphonated is Show Answer


Q239) Propylene on hydrolysis with sulphuric acid forms Show Answer


Q240) What is the product formed when acetylene reacts with hypochlorous acid? Show Answer


Q241) Alkenes undergo Show Answer


Q242) Polymer of propyen is: Show Answer


Q243) Which of the following has the least octane number? Show Answer


Q244) The tar which is used to make roads is a solid known as: Show Answer


Q245) Thermal decomposition of alkanes in the absence of air is called Show Answer


Q246) The conditions for aromaticity is Show Answer


Q247) When butane-1 is mixed with excess of bromine, the expected reaction product is: Show Answer


Q248) Propene on reaction with diazomethane in presence of UV radiations gives: Show Answer


Q249) Both methane and ethane may be obtained by a suitable one-step reaction from Show Answer


Q250) Iodination of alkane is made in presence of: Show Answer


Q251) Pick out the wrong statement. Show Answer


Q252) A hydrocarbon reacts with hypochlorous acid to give 2-chloroethanol. The hydrocarbon is: Show Answer


Q253) The angle strain in cyclobutane is Show Answer


Q254) Aromatization of n-heptane and n-octane gives respectively: Show Answer


Q255) Which of the following organic compounds exhibit acidic character? Show Answer


Q256) Sodium formate on heating with soda lime gives: Show Answer


Q257) Which of the following can be used for preparation of propane? Show Answer


Q258) The marsh gas detector used by miners works on the principle of: Show Answer


Q259) The compound with highest boiling point. Show Answer


Q260) The most stable conformation of chlorocyclohexane at room temperature is: Show Answer


Q261) Acetylene is not used in making: Show Answer


Q262) That acetylene is a linear molecule is shown by Show Answer


Q263) Which of the following differs with the other three? Show Answer


Q264) Which of the following reactions will yield, 2, 2-dibromopropane? Show Answer


Q265) Which one of the following can distinguish propyne from propene? Show Answer


Q266) The reaction of ethene with oxygen in presence of a silver catalyst gives: Show Answer


Q267) Which of the following is Wurtz-Fittig reaction? Show Answer


Q268) Ozonolysis can be used to detect: Show Answer


Q269) In which of the following will Kharasch effect operate? Show Answer


Q270) A lead compound known as….is used as anti-knock in petroleum industry to increase the efficiency of fuel consumption Show Answer


Q271) Which of the following form alkynide? Show Answer


Q272) Which of the following reagents when heated with ethyl chloride, forms ethylene? Show Answer


Q273) Reduction of 2-methyl-1-bromopropane with metal and acid gives: Show Answer


Q274) Dehydration of 2-butanol yield Show Answer


Q275) Which statement is correct? Show Answer


Q276) Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne? Show Answer


Q277) 2-chloro-3-methylbutane is treated with sodium in etherial solution, then it will give Show Answer


Q278) Which of the following is incorrect? The members of the homologous series of alkanes? Show Answer


Q279) Ammoniacal cuprous chloride will give red precipitate with which one of the following? Show Answer


Q280) Mustard gas is: Show Answer


Q281) The structural formula of the compound which yields ethylene upon reaction with zinc: Show Answer


Q282) An alkyne combines with a conjugated diene to give an unconjugated cycloalkadiene. The most likely title of this reaction is Show Answer


Q283) The most important method of preparation of hydrocarbons of lower carbon number is: Show Answer


Q284) The number of carbon atoms in hydrocarbons of kerosene is in the range of: Show Answer


Q285) A mixture of 1-chlorobutane and 2-chlorobutane when treated with alcoholic KOH gives Show Answer


Q286) An octane number 100 is given to: Show Answer


Q287) When butene-1 is mixed with HBr, the major reaction product is: Show Answer


Q288) The order of appearance of the following with rising temperature during the refining of crude oil is: Show Answer


Q289) Cetane number of diesel fuel increases with the addition of: Show Answer


Q290) Distillation of acetone with concentrated sulphuric acid gives Show Answer


Q291) Soda lime is used extensively in decarboxylation reaction to obtain alkanes. Soda lime is: Show Answer


Q292) Incomplete combustion of petrol or diesel oil in automobile engines can be best detected by testing fuel gases for the presence of: Show Answer


Q293) Mustard gas is a Show Answer


Q294) Which of the following is not true? Show Answer


Q295) Action of RMg X with vinyl chloride gives: Show Answer


Q296) Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide? Show Answer


Q297) A meta directing functional group is Show Answer


Q298) Which one of the following compounds is prepared in the laboratory from benzene by a substitution reaction? Show Answer


Q299) Only two isomeric monochloro derivatives are possible for: Show Answer


Q300) Butene-1 may be converted to butane by reaction with Show Answer


Q301) The reaction of toluene with chlorine in presence of ferric chloride gives predominantly Show Answer


Q302) During Wurtz reaction, which of the following is sometimes also obtained because of decomposition of free radicals? Show Answer


Q303) Decarboxylation of malonic acid gives: Show Answer


Q304) Reactivity of tertiary H, secondary H and primary H towards elimination is: Show Answer


Q305) 1-butyne on hydration gives Show Answer


Q306) The most reactive halogen in the halogenation of alkanes is: Show Answer


Q307) Indane is: Show Answer


Q308) Which of the following cycloalkane gives open chain compound, when reacts with bromine? Show Answer


Q309) The addition of HBr to an alkene in the presence of peroxide is the example of Show Answer


Q310) On mixing a certain alkane with chlorine and irradiating it with UV light, it form one monochloro alkane. The alkane could be Show Answer


Q311) Which of the following statements is true for ethane, ethene and acetylene? Show Answer


Q312) On cracking petrol we get: Show Answer


Q313) Methyl bromide is converted into ethane by heating it in ether medium with Show Answer


Q314) The addition of oxygen gas to reaction mixture of chlorine and methane (photochemical chlorination): Show Answer


Q315) Bacterial decomposition of cellulose material present in sewage water gives: Show Answer


Q316) Meso-dibromobutane on debromination gives Show Answer


Q317) Kolbe's synthesis of sodium salt of butanoic acid gives: Show Answer


Q318) The compound formed when silver powder is heated with chloroform: Show Answer


Q319) The reaction of toluene with chlorine in the presence of ferric chloride gives predominantly Show Answer


Q320) Which of the following will yield trans product from butyne? Show Answer


Q321) When sodium propionate is heated with soda-lime, the product formed is Show Answer


Q322) Isopropyl bromide on Wurtz reaction gives Show Answer


Q323) Which one of the following has the minimum boiling point? Show Answer


Q324) The substance that would not at all be formed during the reaction of methane and chlorine in the presence of sunlight is: Show Answer


Q325) When isopropyl magnesium iodide is treated with water, the product is: Show Answer


Q326) Propyne on passing through red hot iron tube gives Show Answer


Q327) n-hexadecane (cetane) has cetane number: Show Answer


Q328) Acetylene does not react with Show Answer


Q329) What is the molecular formula of the product formed when benzene is reacted with ethyl chloride in presence of anhydrous aluminium chloride? Show Answer


Q330) A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is Show Answer


Q331) By coaltar distillation which is not obtained? Show Answer


Q332) The treatment of ethane with cold alkaline potassium permanganate produces Show Answer


Q333) As compared to melting points of even carbon chain isomers, the melting points of odd carbon chain alkanes are: Show Answer


Q334) Choose the correct statement Show Answer


Q335) 2-hexyne can be converted to trans-2-hexene by the action of: Show Answer


Q336) Which of the following will not produce ethane? Show Answer


Q337) Which will not react with acetylene? Show Answer


Q338) Ozonolysis of an organic compounds gives formaldehyde as one of the products. This confirms the presence of Show Answer


Q339) Among the paraffins it is generally found that with an increase in the molecular weight: Show Answer


Q340) Which of the following reactions can be used to prepare methane? Show Answer


Q341) Household gas or liquefied petroleum gas (L.P.G.) mainly contains: Show Answer


Q342) Which one of the following gives, on ozonolysis, both aldehydes and ketones? Show Answer


Q343) Which among the following give alkanes on reduction? Show Answer


Q344) Lewisite (a war gas) is an…….compound Show Answer


Q345) Butyne-1 and butyne-2 can be distinguished by: Show Answer


Q346) An isolated alkadiene is: Show Answer


Q347) If a halogen compound contains OH group, will it be possible to carry out the Wurtz reaction? Show Answer


Q348) Phenyl magnesium bromide reacts with methanol to give Show Answer


Q349) Iso-octane is added to petrol: Show Answer


Q350) When cyclohexane is poured on water, it floats, because: Show Answer


Q351) Which of these will not react with acetylene? Show Answer


Q352) The catalytic hydrogenation is more easier in case of which alkene? Show Answer


Q353) Addition of hydrogen on C=C is called hydrogenation. Addition of halogen on C=C is called: Show Answer


Q354) The synthetic gas is: Show Answer


Q355) Gem dihalides on treatment with alcoholic KOH give Show Answer


Q356) Acetylene and HCHO react in presence of copper acetylide catalyst to form Show Answer


Q357) Decarboxylation of isobutyric acid leads to: Show Answer


Q358) In the addition of HBr to propene in the absence of peroxides the first step involves the addition of: Show Answer


Q359) When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is Show Answer


Q360) Propyne and propene can be distinguished by Show Answer


Q361) Conformation in molecules is due to: Show Answer


Q362) The non-aromatic compound among the following is Show Answer


Q363) Kerosene is a mixture of: Show Answer


Q364) Which of the following alkenes is most stable? Show Answer


Q365) What is obtained when chlorine is passed in boiling toluene and product is hydrolysed? Show Answer


Q366) It is necessary to use…..in the iodination of alkane. Show Answer


Q367) Ozonolysis of propyne gives: Show Answer


Q368) Reactivity of alkenes towards HX decreases in the order: Show Answer


Q369) 2-methylbutane on reacting with bromine in the presence of sunlight gives mainly Show Answer


Q370) Which statement is correct? Show Answer


Q371) An activating group Show Answer


Q372) An alkyl bromide, RBr of molecular weight 151 is the exclusive product of bromination of which hydrocarbon? Show Answer


Q373) The conversion of liquid hydrocarbon into a mixture of gaseous compounds by heat alone is known as: Show Answer


Q374) Ethyl benzene cannot be prepared by Show Answer


Q375) Silver acetylide when heated with HCl gives: Show Answer


Q376) The addition of HCl to 3, 3, 3-trichloropropene gives Show Answer


Q377) Sodium ethoxide is specific reagent for: Show Answer


Q378) A fuel contains 25% n -heptane and 75% iso-octane. Its octane number is: Show Answer


Q379) The greatest strain is involved in cycloalkane, when the bond angle is: Show Answer


Q380) Which of the following will be obtained by the bromination of ethylbenzene in the presence of light? Show Answer


Q381) Ethylene is used in making: Show Answer


Q382) The main constituent of light oil fraction is: Show Answer


Q383) The major product in the acid catalysed dehydration of 2-pentanol is: Show Answer


Q384) Which gas is commonly used in welding? Show Answer


Q385) The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are Show Answer


Q386) Which is most acidic of the following? Show Answer


Q387) Addition of HI on double bond of propene yields isopropyl iodide and not n-propyl iodide as the major product, because addition proceeds through: Show Answer


Q388) Correct statement about 1,3-dibutene Show Answer


Q389) Preparation of ethane by electrolysis of aqueous solution of potassium acetate is called Show Answer


Q390) Dehydrohalogenation of 1,2-dibromobutane with alc. KOH gives: Show Answer


Q391) Water can be added across a triple bond in the presence of Show Answer


Q392) Both methane and ethane may be obtained in one step reaction from: Show Answer


Q393) The product formed when acetylene is passed through red hot tube is: Show Answer


Q394) Among the following statement on the nitration of aromatic compounds, the false one is Show Answer


Q395) Which of the following compound is aromatic? Show Answer


Q396) To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant or reactants
will be: Show Answer


Q397) Photochemical chlorination of alkane is initiated by a process of: Show Answer


Q398) The electrolysis of aqueous solution of potassium succinate produces Show Answer


Q399) The gas believed to be the cause of explosion in coal-mines or fire damp is: Show Answer


Q400) Addition of HBr to propylene in presence of benzoyl peroxide, follows Show Answer


Q401) 2-phenyl propene on acidic hydration gives, Show Answer


Q402) Halogenation of alkanes is an example of: Show Answer


Q403) The most stable isomer of 1,2-dichloroethane is: Show Answer


Q404) Grignard's reagent gives alkane with: Show Answer


Q405) The carbon-carbon bond length in benzene is Show Answer


Q406) Electrolysis of a concentrated solution of sodium fumarate gives: Show Answer


Q407) In order to overcome angle strain, cyclohexane acquires: Show Answer


Q408) Ethane can be freed (isolated) from the impurity of ethylene by washing with: Show Answer


Q409) Poisonous gases are: Show Answer


Q410) A chlorohydrocarbon, named chlorodane is used especially as: Show Answer


Q411) The addition of tetraethyl lead of petrol: Show Answer


Q412) Which of the following reactions will give an alkyne? Show Answer


Q413) Which one among the following is assigned an octane number of zero? Show Answer


Q414) The process where straight run gasoline is cracked in order to increase octane number is called: Show Answer


Q415) The treatment of aluminum carbide with water or dilute acid produces Show Answer


Q416) When acetylene is passed through red hot iron tube, compound X is formed. Which one of the following reactions will yield X as the major product? Show Answer


Q417) The major product formed when a 3, 3-dimethyl butan-2-ol is heated with concentrated sulphuric acid, is Show Answer


Q418) Most of the hydrocarbons from petroleum are obtained by: Show Answer


Q419) Cyclopentadienyl anion is Show Answer


Q420) Ozonolysis of buta-1,3-diene gives: Show Answer


Q421) Which is not true in the case of natural gas? Show Answer


Q422) Wurtz reaction using bromoethane yields: Show Answer


Q423) Which of the following compounds is not aromatic? Show Answer


Q424) Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH solution gives Show Answer


Q425) Toluene can be converted into benzaldehyde by oxidation with Show Answer


Q426) The reagent used for dehydration is: Show Answer


Q427) Formation of alkane by the action of zinc on alkyl halide is called Show Answer


Q428) Temperature of oxyacetylene flame is: Show Answer


Q429) Benzene can be obtained by heating either benzoic acid with X or phenol with Y. X and Y are respectively Show Answer


Q430) Hydrocarbon reacts with metal by displacing the H-atom is: Show Answer


Q431) Petroleum is a mixture of: Show Answer


Q432) The reduction of an alkyne to alkene using Lindlar catalyst result into Show Answer


Q433) Which molecule will undergo radical formation oxidation reaction most readily? Show Answer


Q434) Which of the following is expected to be aromatic? Show Answer


Q435) Aniline is treated with a mixture of sodium nitrite and hypophosphorus acid, the product formed is Show Answer


Q436) Hexachloroethane is also called Show Answer


Q437) In presence of nickel cyanide, acetylene gives Show Answer


Q438) Conjugated double bonds are present in: Show Answer


Q439) Normal alkanes can undergo sulphonation if they contain: Show Answer


Q440) The dehydrohalogenation of neopentyl bromide with alcoholic KOH gives mostly: Show Answer


Q441) Which of the following liberates methane on treatment with water? Show Answer


Q442) Which statement is correct? Show Answer


Q443) The most stable conformational isomer of cyclohexane is: Show Answer


Q444) Baeyer's reagent is used in the laboratory for: Show Answer


Q445) Which of the following is elimination reaction? Show Answer


Q446) Product formed on electrolysis of potassium salt of fumaric and maleic acid is Show Answer


Q447) The strongest ortho/para directing group is Show Answer


Q448) When chlorine is passed through warm benzene in presence of the sunlight, the product obtained is Show Answer


Q449) The lowest possible alkane with ethyl group as substituents possesses mol. mass equal to: Show Answer


Q450) The reagent (s) for the following conversion, is/are Show Answer


Q451) The number of conformation (s) for ethane is/are: Show Answer


Q452) The test for unsaturation is confirmed by the decolourisation of which of the following? Show Answer


Q453) Which does not react with chlorine in dark? Show Answer


Q454) The ozonolysis of isobutene gives: Show Answer


Q455) Which compound on reductive ozonolysis forms only glyoxal? Show Answer


Q456) The catalyst used in the manufacture of polythene by Ziegler method is: Show Answer


Q457) 1,3-butadiene has: Show Answer


Q458) Chloroform, on warming with Ag powder gives Show Answer


Q459) By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives Show Answer


Q460) Acetylene on passing into excess of HOCI solution forms: Show Answer


Q461) Ethylene forms ethylene chlorohydrin by the action of: Show Answer


Q462) Which one of the following has the smallest heat of hydrogenation per mole? Show Answer


Q463) Which of the following characteristic apply both to ethane and ethyne? Show Answer


Q464) Conjugated double bond is present in: Show Answer


Q465) The reactivities of ethane, ethylene and acetylene are of the order Show Answer


Q466) Which is not linked with methane? Show Answer


Q467) Wet ether is not used as a solvent in Wurtz reaction, because the water present in it Show Answer


Q468) Out of the following fractions of petroleum the one having the lowest boiling point is: Show Answer


Q469) Acetylene on reacting with hypochlorous acid gives: Show Answer


Q470) Which one of the following compounds will react with methyl magnesium iodide? Show Answer


Q471) When HCI gas is passed through propene in the presence of benzoyl peroxide, it gives:
Show Answer


Q472) Incorrect name of an alkyne is: Show Answer


Q473) Paraffin dissolves in: Show Answer


Q474) Which cannot be prepared by Kolbe's electrolytic reaction using single salt? Show Answer


Q475) Which of these does not follow anti-Markownikoff's rule? Show Answer


Q476) An alkyl bromide (X) reacts with Na to form 4, 5-diethyl octane. Compound (X) is: Show Answer


Q477) To avoid lead pollution, a new anti-knock compound is used. It is: Show Answer


Q478) Angle strain in cyclopropane is Show Answer


Q479) Which of the following compounds cannot be prepared singly by the Wurtz reaction? Show Answer


Q480) Which statement is false? Show Answer


Q481) The presence of unsaturation (olefinic or acetylinic bond) in an organic compound can be tested with: Show Answer


Q482) A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz reaction. The hydrocarbon that will not be formed is: Show Answer


Q483) Which of the following reacts with benzene in presence of anhydrous aluminium chloride and forms acetophenone? Show Answer


Q484) Which of the following species is aromatic? Show Answer


Q485) Compound which gives acetone on ozonolysis Show Answer


Q486) Alkynes occur in nature in the: Show Answer


Q487) Which of the following will have least hindered rotation about carbon-carbon bond? Show Answer


Q488) Wurtz reaction converts alkyl halide into alkane when it is made to react with Show Answer


Q489) Polyethylene is a resin obtained by polymerization of: Show Answer


Q490) Which of the following are produced from coaltar? Show Answer


Q491) The reduction of an alkyne to alkene using lithium metal in liquid ammonia as solvent results into Show Answer


Q492) Propene on reaction with hypochlorous acid to give Show Answer


Q493) A mixture of nitrogen and acetylene, on passing electric spark through it gives: Show Answer


Q494) Which one of these is not true for benzene? Show Answer


Q495) Presence of a nitro group in a benzene ring Show Answer


Q496) Hydrocarbon liquid at STP is: Show Answer


Q497) In the series, ethane, ethene and ethyne, the C-H bond energy is Show Answer


Q498) The shape of 2-butene is: Show Answer


Q499) The substance used as an anti-knock compound is: Show Answer


Q500) Petroleum refining is: Show Answer


Q501) Zinc-copper couple that can be used as a reducing agent is obtained by: Show Answer


Q502) A solution of sodium salt of fatty acid was electrolysed during Kolbe's reaction. The solution left after electrolysis is: Show Answer


Q503) Kolbe's synthesis on electrolysis of sodium salt of butanoic acid gives: Show Answer


Q504) The neutral wax called Ozokerite found near petroleum well is a mixture of: Show Answer


Q505) Which among the following is aromatic? Show Answer


Q506) Which among the following are used as catalyst in cracking? Show Answer


Q507) The general formula of a cycloalkane is Show Answer


Q508) Which of the following alkanes can be easily sulphonated? Show Answer


Q509) The octane number of any fuel increases with: Show Answer


Q510) The chemical reactivity of ethylene is due to: Show Answer


Q511) Product formed when 1-butene is subjected to HBr in the presence of peroxide: Show Answer


Q512) Petrol or gasoline used as an automobile fuel is a mixture of: Show Answer


Q513) The major component of L.P.G. is: Show Answer


Q514) Carbon black, used in making printing ink is obtained by the oxidation of: Show Answer


Q515) Gasoline is: Show Answer


Q516) A hydrocarbon reacts with HI to give (X) which on reacting with aqueous KOH forms (Y). Oxidation of (Y) gives 3-methyl-2-butanone. The hydrocarbon is: Show Answer


Q517) Pure acetylene has sweet ethereal smell while impure smells like garlic due to presence of: Show Answer


Q518) An alkyl halide by formation of its Grignard reagent and heating with water yields propane. What is the original alkyl halide? Show Answer


Q519) Which of the following compounds react with HBr obeying Markownikoff's rule? Show Answer


Q520) Liquid hydrocarbon can be converted to a mixture of gaseous hydrocarbon by: Show Answer


Q521) Cyclobutadiene is said to be Show Answer


Q522) Acetylene reacts with hypochlorous acid to form Show Answer


Q523) To enable easy detection of gas leakage from cylinders, the substance added to L.P.G. is: Show Answer


Q524) Octane no. of 2,3,3-trimethylbutane has been assumed to be: Show Answer


Q525) Which of the following compounds can form metallic derivatives? Show Answer


Q526) Octane no. of a fuel can be increased by: Show Answer


Q527) Catalyst used in dimerization of acetylene to prepare chloroprene is: Show Answer


Q528) Naphalene is an example of Show Answer


Q529) Benzene can react with Show Answer


Q530) In which reaction addition takes place according to Markownikoff's rule? Show Answer


Q531) Paraffin wax is: Show Answer


Q532) Which of the following is called Marsh gas? Show Answer


Q533) Which can be easily oxidized? Show Answer


Q534) n-butane and isobutene, which have same number of hydrogen and carbon atoms in their molecules, boil at different temperatures because: Show Answer


Q535) Common oxidizing agents used in organic chemistry are: Show Answer


Q536) Acetylenic hydrocarbons are acidic because: Show Answer


Q537) Butene -1 may be converted to butane by the reaction with: Show Answer


Q538) Number of acidic hydrogen atom in butyne-1 is: Show Answer


Q539) Propene on reaction with methylene iodide in presence of Zn-Cu couple gives: Show Answer


Q540) The carbon-carbon bond distance in benzene is Show Answer


Q541) Method of converting high boiling hydrocarbons into low boiling hydrocarbons is called: Show Answer


Q542) The mechanism of Wurtz reaction involves: Show Answer


Q543) The most important energy yielding constituent in biogas is: Show Answer


Q544) PVC is a polymer of: Show Answer


Q545) The flash point in India is fixed at: Show Answer


Q546) Lindlar's catalyst is: Show Answer


Q547) The order of relative acidic strengths of water, ethyne and propyne is: Show Answer


Q548) Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces: Show Answer


Q549) Ethylene reacts with slphur monochloride to give: Show Answer


Q550) Ethylene may be prepared by the dehydration of: Show Answer


Q551) Petroleum is formed by the chemical changes in: Show Answer


Q552) Common dehydrating agents for alkanes are: Show Answer


Q553) The most stable conformation of butane is: Show Answer


Q554) The product of acid catalysed hydration of 2-phenyl propene is: Show Answer


Q555) Benzene reacts with chlorine in sunlight to give a final product Show Answer


Q556) The overlapping of orbitals in benzene is of the type Show Answer


Q557) The product obtained when methyl magnesium bromide reacts with methyl alcohol is: Show Answer


Q558) Which of the following have delocalised electron? Show Answer


Q559) Which statement is correct? Show Answer


Q560) Ease of sulphonation of alkanes is: Show Answer


Q561) n-propyl bromide on treating with alcoholic KOH produces Show Answer


Q562) Fischer-Tropsch process is used in the manufacture of: Show Answer


Q563) 2-methylpropene is isomeric with butane-1. They can be distinguished by: Show Answer


Q564) The simplest alkyne is: Show Answer


Q565) An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is: Show Answer


Q566) Which of the following annulenes is anti aromatic? Show Answer


Q567) Which statement is correct? Show Answer


Q568) Which compound does not decolourize bromine dissolved in carbon tetrachloride? Show Answer


Q569) What would be the product formed when 1-bromo-3-chlorocyclobutane reacts with two equivalents of metallic sodium in ether? Show Answer


Q570) Octane number 116 is given for: Show Answer


Q571) Which of the following statements is incorrect? Show Answer


Q572) Formation of ethylene from ethyl bromide is a case of: Show Answer


Q573) The most stable alkene is, Show Answer


Q574) Ethylene can be prepared by electrolysis of an aqueous solution of: Show Answer


Q575) Reactive species in halogenation of benzene in cold and dark Show Answer


Q576) An organic alkadiene on reductive ozonolysis produces
(i) acetaldehyde
(ii) acetone
(iii) 2-methylpropane-1, 3-dial
The formula of alkadiene will be Show Answer


Q577) Synthetic petrol and kerosene can be obtained by passing……under heat and pressure over coal Show Answer


Q578) A hydrocarbon containing 2 carbon atoms give Sabatier and Senderen’s reaction but does not give precipitate with ammoniacal silver nitrate solution. The hydrocarbon in question is: Show Answer


Q579) Acetylene can be converted to higher alkyne using the following sequence of reactions: Show Answer


Q580) Which of the following statement is correct? Show Answer


Q581) The correct boiling point order for corresponding hydrocarbons is: Show Answer


Q582) Electrolysis of cold concentrated aqueous solution of potassium methyl succinate yields: Show Answer


Q583) Alkyl halides get converted to alkenes through: Show Answer


Q584) Cycloalkanes are isomeric with Show Answer


Q585) Which gives only one monosubstitution product on chlorination? Show Answer


Q586) The presence of the chlorine atom on benzene ring makes the second substituent enter at a position Show Answer


Q587) Addition of bromine to 1,3-butadiene gives: Show Answer


Q588) A Wittig reaction with an aldehyde gives Show Answer


Q589) Ethylene di bromide on heating with metallic sodium in ether solution yields Show Answer


Q590) When alcoholic solution of ethylene dibromide is heated with granulated zinc, the compound formed is: Show Answer


Q591) Octane number is: Show Answer


Q592) When an aqueous solution containing sodium acetate and sodium propionate is electrolysed we get: Show Answer


Q593) Which one of the following methods is neither meant for the synthesis nor for separation of amines? Show Answer


Q594) Vic-dihalide on treatment with zinc dust gives: Show Answer


Q595) Which will give cyclooctyne when treated with base? Show Answer


Q596) What are the products obtained upon the ozonolysis of pent-2-ene? Show Answer


Q597) Addition of halogen acid occurs at slowest rate in: Show Answer


Q598) The Markownikoff's rule is the best applicable to the reaction between Show Answer


Q599) Which of the following acid reacts to reverse the Markownioff's rule? Show Answer


Q600) The addition of HOCl on alkenes in presence of strong acids to form halohydrins proceeds via formation of: Show Answer


Q601) On treatment with chlorine in presence of sunlight, toluene gives the product Show Answer


Q602) Ethylene is used for: Show Answer


Q603) Statement 1: Acetylene forms acetylide but ethylene does not.
Statement 2: Acetylene is lighter than air Show Answer


Q604) Statement 1: Acetylene is more reactive then ethylene.
Statement 2: The acetylene, there is greater strain and hence is reactive. The strain disappears when addition occurs. Show Answer


Q605) Statement 1: 2,3-dimethyl but 2 ene is more stable than but 2 ene.
Statement 2: Tweleve hyper conjugation structure can be written for 2,3 dimethyl but 2ene while but 2 ene has only six. Show Answer