Practice Test


1) Which of the following compounds is not coloured?


2) According to the postulates of Werner's theory for coordination compounds


3) The coordination number of Fe (II) in oxyhaemoglobin is


4) Which of the following will give maximum number of isomers?


5) Atomic number of Cr and Fe are respectively 24 and 26. Which of the following is paramagnetic with the spin of the electron?


6) Which of the following compounds is square planner and does not have any unpaired electron?


7) Pentaamminenitrocobalt (III) cation possesses the property of


8) In any ferric salt, on adding potassium ferrocyanide a Prussian blue colour is obtained, which is mainly due to the formation of


9) Which of the following is organometallic compound?


10) A coordination complex compound of cobalt has molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution. On reacting this solution with excess of silver nitrate solutions, two moles of AgCl get precipitated. The ionic formula of this complex would be


11) Which of the following is expected to be a paramagnetic complex?


12) Which of the following compounds exhibits linkage isomerism?


13) Which one of the following will not show geometrical isomerism?


14) Which of the following hydrate is diamagnetic?


15) Which one of the following octahedral complexes will not show geometrical iosmerism? (A and B are monodenatate ligands)


16) In which there is outer orbital hybridisation?


17) Which complex has square planar structure?


18) In which of the following coordinate compounds the central metal atom obeys the EAN rule.


19) Correct formula of the complex formed in the brown ring test for nitrates is


20) The hypothetical complex chlorodiaquatriamminecobalt (III) chloride can be represented as


21) According to Lewis, the ligands are


22) According to IUPAC nomenclature sodium nitroprusside is named as


23) Which of the following is not considered as an organometallic compound?


24) The number of chloirde ion/s produced by complex tetraamminechloroplatinum (IV) chloride in an aqueous solution is


25) In the compound lithium tetrahydridoaluminate, the ligand is


26) Which is paramagnetic?


27) Some salts although containing two different metallic elements give test for only one of them in solution. Such salts are


28) The chemical formula for iron (III) hexacyanoferrate (II) is


29) Which statement is incorrect?


30) The most stable complex among the following is


31) The complex used as an anticancer agent is


32) Which of the following does not have optical isomer?


33) The formula of sodium nitroprusside is


34) Which of the following is paramagnetic ?


35) Mg is an important component of which bio-molecule occurring extensively in living world?


36) Which of the following has square planar structure?


37) Which of the following will exhibit maximum ionic conductivity?


38) Which of the following complexes will have four isomers?


39) The blue colour obtained in the Lassaigne test is due to formation of the compound


40) The formula of dichlorobis (urea) copper (II) is


41) The group satisfying the secondary valencies of a cation in a complex are called


42) Diethylene triamine is


43) In which of the following compounds, the transition metal is in oxidation state of zero?


44) Transition metals can form complexes in


45) Oxidation state of nitrogen is not correctly given for the compound


46) Which ion produces a small crystal field splitting ( a weak field ligand)?


47) Colour of transition metal complexes can be explained by


48) The tendency to show complex formation is maximum in ............ elements.


49) A reagent used for identifying nickel ion is


50) Geometrical isomerism is found in coordination compounds having coordination number


51) Hexafluorocobaltate (III) ion is found to be high spin complex, the probable hybrid state of cobalt in it is


52) Which of the following compounds would exhibit coordination isomerism?


53) Transition elements form complexes readily because of


54) The two compound sulphatopentamminecobalt (III) bromide and sulphatopentaamminecobalt (III) chloride represent.


55) Bidentate ligand is


56) Iron has lowest oxidation state in


57) Which one is not a ligand?


58) A complex of platinum, ammonia and chlorine produces four ions per molecule in the solution. The structure consistent with the observation is


59) Which of the following pairs of structures represents facial and meridional isomers (geometrical isomers) respectively?


60) The formula of the complex potassium trichloroethylene platinate (II) is


61) In Ziegler-Natta polymerization of ethylene, the active species is


62) Which of the following will exhibit optical isomerism?


63) The shape of cuprammonium ion is


64) The catalyst used for the polymerization of olefins is


65) Which of the following complex species does not involve inner orbital hybridisation?


66) Which of the following ligands is a bidentate?


67) The green pigment present in plants, chlorophyll contains the metal


68) Carnallite is a


69) Which of the following is odd one out?


70) Which one of the following is an example of octahedral complex?


71) Which of the following complex will show geometrical as well as optical isomerism? (en = ethylenediamine)


72) Which of the following is paramagnetic ?


73) A group of atoms can function as ligand only when


74) The coordination number of copper in cuprammonium sulphate is


75) A solution of potassium ferrocyanide would contain ...... Ions.


76) Ligands in a complex salt are


77) An example for a double salt is


78) Which of the following statements is incorrect?


79) Both geometrical and optical isomerisms are shown by


80) Pick out wrong combination.


81) Which of the following shell form an outer octahedral complex?


82) In octahedral CFT, the number of orbitals pushed down in energy are


83) Which of the following cannot show linkage isomerism?


84) Change in composition of coordination sphere yields which type of isomers?


85) An octahedral complex is formed when hybrid orbitals of the following type are involved?


86) Which is high spin complex?


87) Which has square planar geometry?


88) The type of isomerism present in nitropentaamminechromium (III) chloride is


89) A similarity between optical and geometrical isomerism is that


90) A square planar complex is formed by hybridization of which atomic orbitals?


91) The coordination number of a central metal atom in complex is determined by


92) Which one of the following complexes is an outer orbital complex?


93) Coordination compounds have great importance in biological systems. In this context which of the following statements is incorrect?


94) Which of the following compounds shows optical isomerism?


95) Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?


96) Which of the following has a square planar geometry?


97) The compound which does not show paramagnetism is


98) Amongst the following ions which one has the highest paramagnetism?


99) Which of the following is an organometallic compound?


100) The complex ion which has no d electrons in the central metal atom is (At. No. Cr = 24, Mn = 25, Fe = 26, Co = 27)


101) The species having tetrahedral shape is


102) Which compound is formed when excess of KCN is added to aqueous solution of copper sulphate?


103) Among the following, the compound that is both paramagnetic and coloured is


104) Among the following metal carbonyls, the C - O bond order is lowest in


105) The compound(s) that exhibit(s) geometrical isomerism is (are)


106) Which of the following has an optical isomer?


107) Which of the following pairs represents linkage isomers?


108) Exchange of coordination group by a water molecule in complex molecule results in:


109) The type of isomerism found in urea molecule is


110) Anisol is a product obtained from phenol by the reaction known as:


111) Which of the following is diamagnetic in nature?


112) Which is the strongest field ligand?


113) The compound which does not show paramagnetism is


114) Which of the following is expected to undergo nitration more easily and readily to furnish the corresponding
nitro derivatives employing the usual nitrating mixture?


115) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so
obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains:


116) A positive carbylamine test is given by:


117) Which of the following is not true for ligand metal complex?


118) A ligand can also be regarded as


119) Which one of the following has lowest value of paramagnetic behaviour?


120) An octahedral complex is formed when central metal atom undergoes hybridization amongst the….orbitals.


121) Which of the following has the highest molar conductivity in solution?


122) Which of the following is not meta directing group?


123) Which of the following is an organometallic compound?


124) Which among the following is very strong o-, p-directing group?


125) The type of hybridisation in tetrahedral complexes of metal atom is


126) Consider the following statements
I. Chain and position isomerism are not possible together between two isomers
II. Tautomerism is a chemical phenomenon which is catalysed by acid as well as base
III. Tautomers are always metamers
IV. Tautomers are always functional isomers
Select the correct answer by using the codes given below


127) The compound having tetrahedral geometry is


128) Which of the following is most acidic?


129) Benzoylacetonato beryllium exhibit isomerism of the type


130) Which one of the following has a square planar geometry?
(At. No. Fe=26, Co=27, Ni=28, Pt=78)


131) A solution of potassium ferrocyanide would contains-ions


132) Which of the following is not considerd as an organometallic compound?


133) Which statement about coordination number of a cation is true?


134) Among the following, the strongest base is:


135) General formula for arenes is:


136) Which of the following doesn’t have a metal-carbon bond?


137) Thiophene is separated from benzene by:


138) Colour of transition metal complexes can be explained by:


139) Which is most reactive towards electrophilic reagents:


140) Pick a poor electrolytic conductor complex in solution:


141) Benzene reacts with sulphuric acid only when the acid is:


142) The alkane which has only primary hydrogen atom is


143) Which of the following nitroalkane will not show tautomerism?


144) Which is low spin complex?


145) The probable formula for Prussian blue is:


146) Which represents Reimer-Tiemann reaction?


147) The complex ion which has no ‘d’-electron in the central metal atom is :


148) The shape of cobalt hexaammine cation, which has its central cobalt atom surrounded by six ammonia molecules is:


149) Which ligand is capable of forming low spin as well as high spin complexes?


150) An aromatic ether is not cleaved by HI even at 525 K. The compound is:


151) Phenol does not react with:


152) Ferrocene is an example of


153) Which compound is zero valent metal complex?


154) Which of the following compounds is 2, 2, 3-trimethyl hexane?


155) The formula of phenoxy benzene is:


156) Ziegler-Natta catalyst is an organometallic compound containing


157) Ziegler-Natta catalyst is


158) The tendency to show complex formation is maximum in ….elements.


159) EDTA has coordination number


160) Which of the following is used in Friedel-Craft’s acylation reaction?


161) The centric formula for benzene was proposed by:


162) Which is the correct statement?


163) Phenol on sulphonation gives:


164) The number of double bonds in BHC (gammexane) is:


165) Which one of the following octahedral complexes will not show geometrical isomerism? (A and B are
monodentate ligands)


166) Which of the following complex ion is not expected to absorb visible light?


167) The correct sequence of activating power of a group in benzene is:


168) The pair of compounds having metals in their highest oxidation state is


169) The reaction of chloroform with alc. KOH and p-toluidine forms:


170) Which order is correct in spectrochemical series of ligands?


171) Correct structures of [E][S]-5-bromo-2,7-dimetyl, non-4-ene is


172) Which of the following shows geometrical isomerism?


173) Which of the following does not show optical isomerism?


174) Which of the following is an explosive?


175) Rate of substitution in phenol is:


176) Chlorophyll is a coordination compound having central atom of:


177) Which of the following statements is incorrect?


178) Which one is the wrong statement?


179) According to postulates of Werner’s theory for coordination compounds, which of the following is true?


180) Atomic numbers of Cr and Fe are respectively 24 and 26. Which of the following is paramagnetic with the
spin of the electron?


181) Which of the following will give a pair of enantiomorphs?


182) Which among the following will not show chain isomerism?


183) Phenol (1 mole) reacts with bromine to give s-tribromophenol. How much bromine is needed?


184) Dimethyl glyoxime forms a coloured complex with


185) Which has regular tetrahedral geometry?


186) In haemoglobin the iron shows oxidation state:


187) Which can show aromatic character?


188) Of the following complexes, the one with the largest value of the crystal field splitting is:


189) Lithium tetrahydridoaluminate is correctly represented as:


190) Which of the following compounds is generally used for hydrogenation of alkenes?


191) Which does not obey EAN rule?


192) Which of the following is not an organometallic compound?


193) The value of ‘spin only’ magnetic moment for one of the following configuration is 2.84 BM the correct one


194) Which compound burns with a sooty flame?


195) Which reaction can produce R—CO—Ar species?


196) Acidic character of phenol is due to:


197) In triethylenediamine cobalt(III) chloride the coordination number of cobalt is:


198) Mark the unidentical compound


199) A complex compound in which the oxidation number of a metal is zero, is


200) In the halogenation of aromatic nucleus, the halogen carrier, used to generate the species is:


201) Benzene is obtained by


202) IUPAC name of t-butyl chloride is


203) Phenol is more acidic than cyclohexanol because:


204) Phenol is less soluble in water. It is due to:


205) When phenol is treated with excess bromine water, it gives:


206) Which is high spin complex?


207) The correct IUPAC name of tartaric acid is


208) Which of the following compounds has the most acidic nature?


209) When aniline is heated with benzaldehyde, the product is:


210) Slow heating of salicylic acid gives:


211) According to Hückel, monocyclic compounds will show aromaticity when:


212) When phenol is distilled with zinc dust, it gives:


213) Which of the following has maximum resonance energy?


214) Which of the following statements is correct?


215) Which statement is not correct?


216) The complex showing a spin-only magnetic moment of 2.82 BM is


217) The product of acid catalysed hydration of 2-phenyl propene is:


218) Carbolic acid is the name used for:


219) Formaldehyde-phenol resin is:


220) Cyclopentadienyl anion is aromatic due to the presence of:


221) Which xylene is most easily sulphonated?


222) Racemic modification can be resolved by


223) Which of the following structure contain 1 primary and 7 secondary hydrogen atoms?


224) The empirical formula of naphthalene is:


225) The chemical formula of diammine silver (I) chloride is


226) Which group is meta directing?


227) Which statement is true for cyclohexane?


228) Ligands in a complex salt are:


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


230) Which complex is diamagnetic?


231) Meso-tartaric acid is optically inactive due to the presence of


232) Complex forming tendency increases with:


233) Ziegler-Natta catalyst is


234) Among the following compounds the one that is most reactive towards electrophilic nitration is:


235) Phenol on oxidation gives chloranil. The oxidant used is:


236) All the common m -directing groups……the benzene ring towards electrophilic substitution reactions


237) Among the following, the coloured compound is :


238) Which one does not belong to ligand?


239) Which one of the following has square planar structure?


240) Phthalein test is characteristics of ….and is given by it.


241) 4-methyl benzene sulphonic acid reacts with sodium acetate to give:


242) Which of the following compounds would exhibit coordination isomerism?


243) The carboxyl functional group (−COOH) is present in:


244) Which of the following is an example of electrophilic substitution reaction?


245) Which of the following is an organometallic compound?


246) On passing benzene vapour through a tube at 700-800 C or through molten lead we get:


247) Picric acid is a yellow coloured compound. Its chemical name is:


248) The ideal starting material for the synthesis of m-chloronitro benzene is:


249) When ammonia is added to green aqueous solution of nickel(II) sulphate, the colour of the solution changes
to blue violet. This is caused by:


250) Among the following-phenol, benzoic acid, nitrobenzene and toluene, the compound that undergoes
nitration readily is:


251) Which one is organometalllic compound?


252) What are the products formed when an equimolar mixture of benzaldehyde and formaldehyde is heated
with concentrated NaOH?


253) Which of the following is considered to be an anticancer species?


254) For benzaldehyde which of the following is incorrect?


255) The main source of aromatic compounds is:


256) Phenol on hydrogenation in presence of a nickel catalyst at 160 C gives:


257) Fac-mer isomerism is associated with which one of the following complexes? (M=central metal)


258) Which of the following is the correct order of stability of the following four distinct conformation of n
butane?


259) o-nitrophenol can form hydrogen bonds within the molecule. It thus, has:


260) The element which does not form mononuclear carbonyl is:


261) Which of the following is hexadentate ligand?


262) An octahedral complex is formed when hybrid orbitals of the following type are involved


263) Which product is not obtained by heating wood or coal in the absence of air?


264) Dry distillation of calcium benzoate with calcium formate gives:


265) Each metal possesses:


266) Aspirin is:


267) Aniline when diazotised in cold and then treated with dimethyl aniline gives a coloured product. It structure
would be:


268) Pyridine possesses:


269) A reagent used for identifying nickel ion is:


270) Aniline was diazotised and subsequently reduced with stannous chloride and hydrochloric acid to yield:


271) Pick out the complex compound in which the central metal atom obeys EAN rule strictly


272) Amongst the following, the compound that can be most readily sulphonated is:


273) p-chloroaniline and anilium hydrochloride can be distinguished by:


274) Pyrogallol is….. trihydroxy benzene


275) p-cresol reacts with chloroform in alkaline medium to give compound (A) which adds hydrogen cyanide to
form compound (B). The latter on acidic hydrolysis gives chiral carboxylic acid. The acid is:


276) The number of isomeric xylenes is:


277) Among the following metal carbonyls, C— O bond order is lowest in


278) Which of the following shell, form an outer octahedral complex?


279) Friedel-Craft’s reaction of bromobenzene with methyl iodide gives:


280) Which exist as a pair of mirror image isomers?


281) Benzene double bonds are not so reactive as those of hexatriene because:


282) The most stable ion is


283) In the coal-tar distillation of middle oil, the aromatic compounds present are:


284) Which of the following system is most stable for a chelate?


285) The shortest C—O bond order exists in:


286) Between p-nitrophenol and salicyladehyde, solubility in base is:


287) (+) and (-) forms of optically active compounds are different in


288) In which of the following compounds does the central atom obey EAN rule?


289) Which ligand produces a high crystal field splitting (a strong ligand field)?


290) Which of the following coordination compounds would exhibit optical isomerism?


291) Which has maximum paramagnetic character?


292) Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives:


293) Sulphonation of benzoic acid produces mainly:


294) Salicylic acid, aspirin, nylon, plastics and picric acid have a common raw material, namely


295) Ulmann’s reaction is used for the preparation of:


296) Which of the following statements is/are incorrect for D − (+) −glyceradehyde?


297) Which ion is paramagnetic?


298) Dow process is used for the conversion of chlorobenzene to:


299) Phenolphthalein is produced on heating phthalic anhydride and conc. sulphuric acid with:


300) Benzene is converted to toluene by:


301) The number of ions formed when hexamine copper (II) sulphate is dissolved in water is?


302) Nickel metal is in highest oxidation state in:


303) Which of the following complexes show six coordination number?


304) Which of the following statements is wrong?


305) Which chloro derivative of benzene among the following would undergo hydrolysis most readily with
aqueous NaOH to furnish the corresponding hydroxyl derivative?


306) Some salts although containing two different metallic elements give test for only one of them in solution.
Such salts are:


307) The hybridization of central metal ion and shape of Wilkinson’s catalyst is


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


309) Which of the following ring is most strained?


310) Formylchloride has not been prepared so far. Which can function as formylchloride in formylation?


311) Which one of the following does not give a white precipitate with silver nitrate solution?


312) Of the following complex ions, which is diamagnetic in nature?


313) Which of the following are produced from coal-tar?


314) Chlorine is least reactive in:


315) Which follows EAN rule?


316) Which one is bidentate ligand?


317) The reagent used for conversion of benzene diazonium chloride to benzene is:


318) Which will not give the usual test for iron?


319) The first organic compound prepared in the laboratory was


320) Which of the following statements regarding phenols is not correct?


321) Which would decolourise cold, aq. potassium permanganate solution?


322) Which of the following deactivates benzene substitution?


323) Aniline, chloroform and alc. KOH on heating give:


324) The incorrect statement for IUPAC system of nomenclature is


325) When sodium benzene sulphonate is fused with sodium hydroxide (solid), followed by hydrolysis the
product formed is:


326) The correct order of stability of conformations of cyclohexane is


327) The increasing order of boiling points of compounds given below is:
(I) 1,2-dihydroxy benzene
(II) 1,3-dihydroxy benzene
(III) 1,4-dihydroxy benzene
(IV) Hydroxyl benzene


328) The pair of the compounds in which both the metals are in the higher possible oxidation state is


329) Which of the following are functional isomers?


330) Phenol is:


331) Nitrobenzene is generally used for:


332) Salicylic acid as compared to benzoic acid:


333) Which ligand is expected to be bidentate?


334) Which one of the following is most reactive towards aqueous NaOH?


335) Which is not an aromatic compound?


336) Which one of the following is wrongly matched?


337) Stereoisomers have different


338) Which of the following will show optical isomerism?


339) Which one group is trivalent in nature?


340) Benzene contains double bonds but does not give addition reactions because:


341) The type of isomerism present in nitropentaammine-chromium (III) chloride is :


342) Amongst the following carboxylic acids the strongest acid is:


343) The energy difference between chair and the boat conformation of cyclohexane is


344) Compounds having the same molecular formula but different properties are called


345) The benzene molecule contains:


346) The solubility of AgCN increases by the addition of KCN because of:


347) Alicyclic compounds are


348) Which of the following compounds reacts slower than benzene in electrophilic bromination?


349) Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-
dinitrochlorobenzene is readily replaced because:


350) Salicylic acid on heating with soda lime forms:


351) Which of the following is an organometallic compound?


352) Which of the following is the strongest base?


353) Which of the following will be aromatic?


354) The correct symbol relating the two Kekule structure of benzene is:


355) Benzaldehyde can be obtained by the hydrolysis of:


356) Which of the following has an optical isomer?


357) Chromium carbonyl is:


358) Which of the following reagents may be used to distinguish between phenol and benzoic acid?


359) Which one of the following shows maximum value of paramagnetic behaviour?


360) Which of the following species will be diamagnetic?


361) Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?


362) Moth balls contain:


363) The number of unidentate ligands in the complex ion is called


364) According to Hückel rule, the number of π-electrons in anthracene is:


365) In ethane and cyclohexane which one of the following pairs of conformations are more stable?


366) Among the following which is not π-bonded organometallic compound?


367) o, p-directing groups are generally:


368) Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl due halides to:


369) Which would be least reactive towards bromine?


370) Which has a smell of oil of winter green?


371) Which statement is not correct regarding aniline?


372) Among the following, identify the species with an atom of +6 oxidation state:


373) Which of the following alkanes contain primary, secondary, tertiary and quaternary carbon atom together?


374) The hardness of water is estimated by:


375) The number of tertiary C-atoms in 2,2,4,4-tetra methyl pentane is


376) The Clemmensen reduction of benzaldehyde gives:


377) Which one of the following has an optical isomer?
(en=ethylenediamine)


378) Which fraction of coal-tar is rich in arene?


379) Which complex cannot ionize in solution?


380) Ozonolysis of benzene gives:


381) In benzene, C—C bond length is 1.39 Å; the C—H bond length is:


382) Which of the following may be used as food preservative?


383) Which compound is formed when sodium phenoxide is heated with ethyl iodide?


384) In metal carbonyl (organometallic)complexes, the M— C bond is


385) The correct order of magnetic moments (spin only values in BM) among the following is
(Atomic no. Mn=25, Fe=26, Co=27)


386) Aniline and methyl amine can be differentiated by:


387) The functional group present in cresols is:


388) Which one of the following compounds is most acidic?


389) The most unstable configuration of cyclohexane is


390) In which compound synergic effect is present?


391) Aqua regia reacts with Pt to yield:


392) Nitration of toluene takes place at:


393) Estimation of calcium and magnesium is done by


394) How many enantiomer pairs are obtained by monochlorination of 2, 3-dimethyl butane?


395) Common reactions of benzene and its derivatives are:


396) The attacking species in aromatic sulphonation is:


397) Which one of the following compound does not react with bromine?


398) A complex of platinum, ammonia and chlorine produces four ions per molecule in the solution. The structure
consistent with the observation is:


399) According to effective atomic number rule the central metal acquires:


400) The correct structure of ethylenediaminetetraacetic acid (EDTA) is


401) The coordination number of a central metal atom in a complex is determined by


402) Which ion shows usually the coordination number 6?


403) Which of the following represents hexadentate ligand?


404) The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct
one is


405) Choose the IUPAC name of


406) Which of the following is a heterocyclic compound?


407) The correct order of reactivity towards electrophilic substitution is:


408) Increasing order of expected enol content


409) Out of the following the metal which forms polynuclear carbonyl is:


410) Picric acid and benzoic acid can be distinguished by:


411) The compound having the lowest oxidation state of iron is


412) m-dihydroxybenzene is also called:


413) The ion which exhibits green colour


414) Geometrical isomerism is found in coordination compounds having coordination number:


415) Which one of the following complexes is not expected to exhibit isomerism?


416) Pure aniline is a:


417) Aromatic compounds undergo most easily:


418) Complexes with halide ligands are generally:


419) Which one of the following is expected to exhibit optical isomerism [en =ethylenediamine]?


420) Among the following statements on the nitration of aromatic compounds, the false one is:


421) Which one is not correct for homologous series?


422) Ferric ion forms a prussian blue coloured solution due to the formation of:


423) Which of the following can exhibit geometrical isomerism?


424) A compound contains 2 dissimilar asymmetric C-atoms. The number of optical isomers are


425) Which compound exhibits optical isomerism?


426) Ruthenium carbonyl is:


427) Oxidation state of nitrogen is incorrectly given for
Compound Oxidation state


428) Which of the following can participate in linkage isomerism?


429) Ortho-nitrophenol is less soluble in water than p-and m-nitrophenols because:


430) Among the following most basic compound is:


431) The EAN of platinum in potassium hexachloroplatinate (IV) is:


432) The number of ions formed when copper ammonium sulphate is dissolved in water is:


433) Which of the following cannot show linkage isomerism?


434) Which of the following compounds is not optically active?


435) Phenol is less acidic than:


436) Incorrect statement is


437) Which of the following complexes exhibits the highest paramagnetic behaviour?


438) The coordination number in a/an ……… complex may increase to 8.


439) Compound used for covering wounds caused by bite of mad dog is:


440) Cinnamic acid on decarboxylation gives:


441) In which of the following pairs both the complex show optical isomerism?


442) The name of the ring structure complex compound formed between metal ion and polydentate ligand is


443) Which statement is wrong with regard to acetaldehyde and benzaldehyde?


444) Which reaction sequence would be best to prepare 3-chloroaniline from benzene?


445) Which will show tautomerism?


446) Which one of the following is most reactive towards electrophilic reagent?


447) Which one of the following is not an explosive?


448) The species having tetrahedral shape is


449) An imperfect complex of a complex compound is 100% ionized; the compound is called:


450) For which transition metal ions are low spin complexes impossible?


451) Among the following compounds, the most acidic is:


452) An aromatic primary amine with cold nitrous acid leads to the formation of:


453) Chlorobenzene gives DDT when it reacts with:


454) Which is considered to be an anticancer species?


455) The compound required for the formation of thermosetting polymer with methanal is:


456) Which one of the following has highest number of isomers?


457) Which group is o- and p-directing?


458) When benzyl chloride is boiled with aqueous solution of lead nitrate in current of carbon dioxide, the main
product is:


459) Ligands in complex compounds


460) Aniline is separated by:


461) Aqueous solution of nickel sulphate on treating with pyridine and then adding a solution of sodium nitrite
gives dark blue crystals of:


462) Benzyl alcohol is obtained from benzaldehyde by:


463) The structure of the compound that gives a tribromo derivative on treatment with bromine water is:


464) Which one of the following complex ions has geometrical isomers?


465) The strongest acid among the following aromatic compounds is:


466) The isomers observed in alkanes is


467) The two compounds pentaamminesulphatocobalt (III) bromide and pentaamminesulphatocobalt(III)
chloride represent:


468) In the Grignard reaction, which metal forms an organometallic bond?


469) Aromatic hydrocarbons are the derivatives of:


470) Benzene easily shows:


471) When benzoic acid is heated with soda lime, we get:


472) If a compound absorbs violet colour from the sunlight, then the observed colour is:


473) Sulphonic acid is used in the manufacture of:


474) The strongest o-, p-directing group among the following is:


475) From the stability constant (hypothetical values) given below, predict which is the strongest ligand?


476) Which has highest m.p.?


477) Hexafluorocobaltate(III) ion is found to be high spin complex, the probable hybrid state of cobalt in it is:


478) Which isomeric dibromotoluene is most difficult to make from toluene?


479) Nitration of salicylic acid gives:


480) Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of
sodium nitrite in the presence of dilute HCl. The compound so formed is treated with fluoroboric acid which
is subsequently heated dry. The final product is:


481) Which of the following is a common donor atom in ligands?


482) The reaction of aniline with acetyl chloride in presence of NaOH gives:


483) Which of the following will exhibit maximum ionic conductivity?


484) Dipole moment of p-nitroaniline, when compared to nitrobenzene (X) and aniline (Y) will be:


485) The structure of iron pentacarbonyl is:


486) Turnbull’s blue is:


487) The trivial name among the following is


488) The overlapping in benzene is in carbon-carbon orbitals of the type:


489) Change in composition of coordination sphere yields which type of isomer?


490) The effective atomic number rule is less likely to apply if the metal-ligand bond:


491) Potassium ferrocyanide is an example of


492) 1-phenyl, 2-chloropropane on treatment with aqueous KOH gives mainly:


493) Which class of compounds can exhibit geometrical isomerism?


494) A new carbon-carbon bond is formed in:


495) Which of the following compounds can exhibit tautomerism?


496) The most basic compound among the following is:


497) Which of the following has least oxidation state of Fe?


498) Which is an excellent antiseptic?


499) Scientist who explained the structures and isomerism in the complex compound was:


500) The cation that does not form an ammine complex with excess of ammonia is:


501) The complex ion which has the highest magnetic moment among the following is


502) Which of the following has highest boiling point?


503) A nitrogen containing organic compound on heating with chloroform and alcoholic KOH evolved very
unpleasant smelling vapours. The compound could be:


504) Which of the following 0.1 M complex compound solutions will have the minimum electrical conductivity?


505) False statement is


506) The compound 2,2’-bipyridine has the structure


507) Diethylenetriammine is:


508) Aniline reacts with excess of bromine to give:


509) In SCN ligand if N is attached to central atom, the name of ligand is:


510) One of the following statements regarding Reimer-Tiemann reaction is false:


511) The structure representing a heterocyclic compound is


512) Nitroethane can exhibit one of the following kind of isomerism


513) Benzaldehyde reacts with excess of anhydrous ethyl alcohol in the presence of HCl, gives:


514) Which pair of isomerism is not possible together?


515) Which will give chiral molecule?


516) The neutral ligand is:


517) p-nitro benzldehyde reacts with concentrated NaOH solution at room temperature to give:


518) But-1-ene and cyclobutane exhibit


519) The groups satisfying the secondary valencies of a cation in a complex are called:


520) Benzene was dicovered by:


521) Which of the following statements is not correct?


522) Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives:


523) Which of the following has maximum probability of showing tautomerism?


524) The halide which undergoes nucleophilic substitution most readily is:


525) The ′E′-isomer is


526) The Baeyer angle strain is minimum in


527) Among the following ions, which one has the highest unpaired electrons?


528) Complexes with bidentate ligands are called:


529) The compound which result from the coordination of carbon monoxide are known as


530) The insecticide, germicide gammexane is a formulation for:


531) Which of the following complex ions is expected to absorb visible light?


532) Which statement is true?


533) Which can be used for carrying out electrophilic aromatic substitution?


534) Which of the following can participate in linkage isomerism?


535) The number of ions formed when cuprammonium sulphate is dissolved in water is


536) Tautomerism is not exhibited by :


537) In coal-tar fraction of heavy oil, the aromatic compound present is:


538) Optical isomerism is shown by octahedral complexes


539) Which can be hydrolysed most easily?


540) The most stable configuration of n butane will be


541) Anhydrous aluminium chloride is used in Friedel-Craft’s reaction because it is:


542) Which of the following has lowest boiling point?


543) All ligands are:


544) Aspirin is known as:


545) Which of the following has on optical isomer?


546) The property by virtue of which a compound can rotate the plane of polarised light is known as


547) Which one of the following is an inner orbital complex as well as diamagnetic in nature?


548) Benzene reacts with…..to give acetophenone.


549) Which group would you introduce into a drug or a dye to make it water soluble?


550) Vanillin, used as a flavouring agent is:


551) Which of the following will exhibit optical isomerism?


552) Which one is a mixed ketone?


553) Transition metals can form complexes in:


554) Which molecule has tetrahedral geometry?


555) Which of the following Fischer projection formula is same as D-glyceraldehyde?


556) Which of the following is non-ionizable?


557) Increasing order of expected keto content


558) Which is colourless complex?


559) Which is not a reasonable structure for dimethyl benzene?


560) A mixture of benzene and aniline can be separated by:


561) The electrophile involved in the above reaction is:


562) Benzoyl Chloride is prepared from benzoic acid by:


563) Which of the following ions forms most stable complex compound?


564) Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?
(Atomic no. Cr=24, Mn=25, Fe=26, Co=27)


565) Which of the following statements is not correct?


566) When phenol is reacted with chloroform and an alkali like NaOH, the compound formed is salicyladehyde. If
we use pyrene in place of chloroform the product obtained is:


567) Which of the following is most powerful meta directing group?


568) Which among the following compounds will show metamerism?


569) Formation of complex compound can be detected by:


570) The complex that violates the EAN:


571) EDTA is a…..ligand.


572) Thymol, a phenol derivative is mainly used as:


573) Which of the following complex has zero magnetic moment (spin only)?


574) Which compound is zero valent metal complex?


575) The tetrahedral crystal field splitting is only…..of the octahedral splitting.


576) According to IUPAC nomenclature sodium nitroprusside is named as


577) The chemical name of DDT is:


578) Cumene is:


579) In Etard’s reaction toluene is oxidised to benzaldehyde using:


580) Which of the following will exhibit geometrical isomerism?


581) Ferrocene is:


582) Which one is an outer orbital complex?


583) Which ion shows only the coordination number 4 in complexes?


584) Which of the following is not an isomer of but-1-yne?


585) Which of the following is wrong statements?


586) Which of the following represents a chelating ligand?


587) Which of the following will give maximum number of isomers?


588) CuCl reacts with KCN solution forming a complex. Coordination number of copper in the complex is:


589) The terms stereoisomers, enantionmers and diastereomers will refer


590) Aniline was acetylated. The product on nitration followed by alkaline hydrolysis gave:


591) Which is the structure of compound 2-(1-cyclobutenyl)-1-hexene?


592) On explosion TNT gives:


593) Hexafluoroferrate(III) ion is an outer orbital complex. The number of unpaired electrons present in it is:


594) Which one amongst the following, exhibit geometrical isomerism?


595) Chiral molecules are those which are


596) At room temperature the eclipsed and the staggered forms of ethane cannot be isolated because


597) A group of atoms can function as a ligand only when


598) 2-methyl phenol is:


599) For blasting purpose TNT is mixed with:


600) During the debromination of meso-dibromobutane, the major compound formed will be


601) Nitration of benzene is:


602) Reimer-Tiemann reaction involves a:


603) Which does not have a carboxyl group?


604) The oxidation state of Ag in Tollens’ reagent is:


605) Which of the following is not isomeric with diethyl ether?


606) Which of the following compounds will show a negative test with phenyl hydrazine?


607) Friedel-Craft’s reaction is not possible in:


608) Among the following, the correct statement is


609) In which of the following p-electrons of the halogens are not involved in delocalisation?


610) Ethylene diamine is an example of


611) In chlorobenzene, the —Cl group:


612) Complexation is shown by:


613) AgO in Ag(II) complex which is:


614) Acylation of benzene to produce aliphatic aromatic ketones is called:


615) Chlorobenzene is prepared commercially by:


616) Which one of the following will not show geometrical isomerism?


617) When ethyl benzoate is hydrolysed with aqueous alkali, the products present in the medium are:


618) Which of the following is more basic than aniline?


619) Name of some compounds are given below. Which one is not in IUPAC system?


620) For which transition metal ions are low spin complexes possible?


621) Which one is monodentate ligand?


622) Cyclic hydrocarbon molecule A has all the carbons and hydrogens in a single plane. All the carbon-carbon
bonds are of same length and less than 1.54 Å and more than 1.34 Å. The C— C—C bond angle will be:


623) Chlorine reacts with benzaldehyde to give:


624) Phenol is:


625) Which one is example of octahedral complex?


626) Which one of the following statement is correct?


627) Which of the following fractions obtained in fractional distillation of coal-tar contains benzene and toluene?


628) The tetrahedral complexes have coordination number


629) The C—C bond length in benzene is ……than C—C bond length in alkenes.


630) Which are generally used for preparing derivative of aldehydes and ketones?


631) En is an example of a:


632) In which of the following ions has the metal atom EAN as 36?


633) A characteristics group test for phenolic gp. is:


634) Which of the following statements is/are incorrect?


635) Gives are (i) cyclohexanol; (ii) acetic acid; (iii) 2, 4, 6-trinitrophenol; and (iv) phenol. In these the order of
decreasing acidic character will be:


636) Phenol and benzoic acid can be distinguished by:


637) The hypothetical complex chloro diaquatriammine cobalt(II) chloride can be represented as:


638) Which is expected to be paramagnetic?


639) Among the following four compounds:


640) Cis-trans -isomerism is found in square planar complexes of the molecular formula: (a and b are
monodentate ligands)


641) Which ion produces a small crystal field splitting (a weak ligand field)?


642) Benzene undergoes substitution reaction more easily than addition because:


643) Isomers have essentially identical


644) Which of the following pair is not correctly matched?


645) CuCl dissolves in ammonia forming a complex. The coordination number of copper in the complex is:


646) Schiff’s bases are formed when aniline is condensed with:


647) Which of the following is not an organometallic compound?


648) Which of the following is not an organometallic compound?


649) The formula of sodium nitroprusside is:


650) Which of the following complex species does not involve inner orbital hybridisation?


651) The type of isomerism shown by, 6,6’-disitrodiphenic acid is


652) Which one of the following compounds forms benzoic acid on oxidation?


653) Glycinato ligand is:


654) The example of coordination isomerism is


655) Coordination compounds have great importance in biological systems. In this context which of the following
statement is incorrect?


656) Aniline on treating with phosgene gives:


657) On boiling with conc. hydrobromic acid, phenylethylether will yield:


658) Enol form is more stable in


659) Which one readily accepts a proton?


660) The phenomenon of optical activity will be shown by:


661) Which one of the following will be able to show cis-trans-isomerism?
(A A′ is unsymmetrical bidentate ligand, ABCD are unidentate ligands.)


662) The coordination number of a metal in coordination compound is


663) Which of the following compounds shows optical isomerism?


664) Mark the correct statement


665) Which among the following will be named as dibromidobis (ethylene diamine) chromium (III) bromide?


666) Which one of the following complex is an outer orbital complex?
(Atomic no. Mn=25, Fe=24, Co=27, Ni=28)


667) Benzene can be directly obtained from:


668) Chlorobenzene on treatment with Raney nickel or Al in presence of alkali gives:


669) The compound that undergoes decarboxylation most readily under mild condition is:


670) Which ion is paramagnetic?


671) Which of the following compounds shows optical isomerism?


672) Benzaldehyde, when heated with concentrated KOH solution, gives:


673) 3-chloro-4-methyl benzene sulphonic acid on steam distillation gives:


674) Which of the following is not an organometallic compound?


675) Which of the following pairs of compounds are enantiomers?


676) The complex used as an anticancer agent is


677) Dyes are formed when diazonium salts react with:


678) Potassium ferrocyanide is a


679) The primary and secondary valencies of chromium in the complex ion, dichlorodioxalatochromium (III) , are
respectively.


680) The correct statement related to IUPAC nomenclature is


681) Which of the following isomerism is shown by ethyl acetoacetate?


682) p-nitrophenol is stronger acid than phenol because nitro group is:


683) Among the following group, which deactivates benzene ring for electrophilic substitution:


684) Iron has lowest oxidation state in:


685) The dihedral angle between the two methyl groups in Gauch conformation of n butane is


686) Increasing order of acid strength among p-methoxyphenol, p-methylphenol and p-nitrophenol is:


687) Which of the following cations does not form an ammine complex with excess of ammonia?


688) Which aromatic acid among the following is weaker than simple benzoic acid?


689) Which statement is incorrect?


690) Which of the following has asymmetric C-atom?


691) Racemic tartaric acid is optically inactive due to


692) Nitration of aniline is done in:


693) A bridging ligand possesses:


694) What is the neutralization equivalent of benzoic acid?


695) m-chlorobenzaldehyde on reaction with conc. KOH at room temperature gives:


696) Excess of silver nitrate solution is added to 100 mL of 0.01 M pentaaqua chloro chromium (III) chloride
solution. The mass of silver chloride obtained in grams is [Atomic mass of silver is 108].


697) A similarity between optical and geometrical isomerism is that :


698) The number of possible theoretical conformations of n-butane are


699) Salicylic acid when treated with zinc dust gives:


700) Which of the following species is most stable?


701) Which of the following reacts with KCN to form benzoin?


702) Which one is an organometallic compound in the following?


703) The formula of picramide is:


704) An alkane forms isomers if minimum number of C-atom is:


705) Which will form geometrical isomers?


706) Choose the option which show correct preferential order of groups among the following


707) Which of the following is polycyclic compound?


708) Nitrosobenzene can be isolated from nitrobenzene under:


709) Which of the following complexes is an outer orbital complex?


710) The function of anhydrous aluminium chloride in the Friedel-Crafts reaction is:


711) Coordination isomerism is caused by interchange of ligands between the


712) Which aldehyde is used in the manufacture of perfumes?


713) Which of the following statements is not correct?


714) Benzene is a resonance hybrid mainly of two Kekule structures. Hence:


715) Keto form is more stable in


716) Which pair of carbon skeleton is an example of isomerism?


717) Electrolytic reduction of nitrobenzene in weak acidic medium gives:


718) In complexes, metal atom acts as:


719) Which of the following compounds exhibit linkage isomerism?


720) The most stable conformation of chlorohydrin at room temperature is


721) Which of the following compounds is not coloured?


722) Which one has square planar geometry?


723) Which exhibits highest molar conductivity?


724) Coordination compounds have great importance in biological systems. In this context which of the following
statement is incorrect?


725) Which of the following pairs represents linkage isomers?


726) Chlorine is most reactive in:


727) The C—C bond order in benzene is close to:


728) Phenol can be converted into salicylic acid by:


729) The formula of dichlorobis (urea) copper(II) is:


730) Aromaticity of benzene is due to:


731) The coordination number of a central metal atom in a complex is determined by


732) The true statement about benzene is:


733) Which has highest paramagnetism?


734) Which is not true ligands metal complex?


735) Acetophenone on oxidation by perbenzoic acid gives phenyl acetate. The reaction is named as:


736) Friedel-Craft’s reaction does not occur in case of:


737) Salol is used as:


738) Presence of nitro gp. in benzene ring:


739) Which of the following complexes will show geometrical as well as optical isomerism? (en =ethylene
diamine)


740) The huge number of organic compounds is due to the fact that


741) Which one of the following compounds when dissolved in water, gives a solution with pH more than 7?


742) Formula of ferrocene is:


743) Which one of the following has largest number of isomers?
(R=alkyl group, en=ethylenediamine)


744) Which complex is likely to show optical activity?


745) A square planar complex is formed by hybridization of which atomic orbitals?


746) In the compound lithium tetrahydroaluminate, the ligand is


747) Statement 1: Highly charged cations are expected to form most strongly acidic hydrated cations
Statement 2: The acidity of a hydrated metal ion depends on the strength of the bond between cation
and oxygen


748) Statement 1: Hydrazine has two N as donor atoms and behaves as a chelating ligand
Statement 2: Hydrazine is a neutral ligand


749) Statement 1: EDTA forms complexes with a large number of metal ions
Statement 2: It coordinates with 6 points of attachement to the metal, 4 O-atoms and two N atoms


750) Statement 1: A compound whose molecule has D configuration will always be dextrorotatory
Statement 2: Compounds having D configuration may be dextrorotatory or levorotatory


751) Statement 1: Geometrical isomerism is also called C is- trans isomerism.
Statement 2: Tetrahedral complexes shows geometrical isomerism


752) Statement 1: A hydroxy group directly attached to a carbonyl group constitutes a carboxyl group
Statement 2: Ester is a family of carboxylic acid derivatives in which – OH group is altered by other
group


753) Statement 1: In keto-enol tautomerism of dicarbonyl compounds, the enol form is preferred in
contrast to the keto-form
Statement 2: The enol form is more stable due to resonance


754) Statement 1: The conversion of an optically active compound into its enantiomer is called Walden
inversion
Statement 2: A racemic mixture is optically inactive due to internal compensation


755) Statement 1: Staggered form is less stable than the eclipsed form
Statement 2: The conformation in which the bond pairs of two central atoms are very far from one
another is called staggered form