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Page 1 PART-I (Single Correct MCQs) 1. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces (a) 1-phenylcyclopentene (b) 3-phenylcyclopentene (c) 4-phenylcyclopentene (d) 2-phenylcyclopentene 2. The structure of the major product formed in the following reaction is Page 2 PART-I (Single Correct MCQs) 1. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces (a) 1-phenylcyclopentene (b) 3-phenylcyclopentene (c) 4-phenylcyclopentene (d) 2-phenylcyclopentene 2. The structure of the major product formed in the following reaction is (a) (b) (c) (d) 3. Which of the following will have a mesoisomer? (a) 2, 3- Dichloropentane (b) 2, 3-Dichlorobutane (c) 2-Chlorobutane (d) 2-Hydroxypropanoic acid 4. o-Methoxybromobenzene is treated with sodamide and then with ammonia. The product formed is (a) o-Methoxyaniline (b) Aniline (c) Methoxybenzene (d) m-Methoxyaniline 5. Which of the following statements is wrong? (a) Ethyl chloride on reduction with Zn-Cu couple and alcohol gives ethane. Page 3 PART-I (Single Correct MCQs) 1. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces (a) 1-phenylcyclopentene (b) 3-phenylcyclopentene (c) 4-phenylcyclopentene (d) 2-phenylcyclopentene 2. The structure of the major product formed in the following reaction is (a) (b) (c) (d) 3. Which of the following will have a mesoisomer? (a) 2, 3- Dichloropentane (b) 2, 3-Dichlorobutane (c) 2-Chlorobutane (d) 2-Hydroxypropanoic acid 4. o-Methoxybromobenzene is treated with sodamide and then with ammonia. The product formed is (a) o-Methoxyaniline (b) Aniline (c) Methoxybenzene (d) m-Methoxyaniline 5. Which of the following statements is wrong? (a) Ethyl chloride on reduction with Zn-Cu couple and alcohol gives ethane. (b) The reaction of methyl magnesium bromide with acetone gives butanol- 2. (c) Alkyl halides follow the following reactivity sequence on reaction with alkenes. R – I > R – Br > R – Cl > R – I (d) C 2 H 4 Cl 2 may exist in two isomeric forms 6. An organic compound A (C 4 H 9 Cl) on reaction withNa/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is (a) tert-butyl chloride (b) sec-butyl chloride (c) isobutyl chloride (d) n-butyl chloride 7. The reaction of toluene with in presence of gives and reaction in presence of light gives ‘Y’. Thus, ‘X’ and ‘Y’ are : (a) X = Benzal chloride, Y = o – Chlorotoluene (b) X = m – Chlorotoluene, Y = p –Chlorotoluene (c) X = o –and p – Chlorotoluene, Y = Trichloromethylbenzene (d) X = Benzyl chloride, Y = m – Chlorotoluene 8. . The decreasing order of the rate of the above reaction with nucleophiles (Nu – ) A to D is [Nu – = (A) PhO – , (B) AcO – , (C) HO – , (D) CH 3 O – ] (a) A > B > C > D (b) B > D > C > A (c) D > C > A > B (d) D > C > B > A Page 4 PART-I (Single Correct MCQs) 1. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces (a) 1-phenylcyclopentene (b) 3-phenylcyclopentene (c) 4-phenylcyclopentene (d) 2-phenylcyclopentene 2. The structure of the major product formed in the following reaction is (a) (b) (c) (d) 3. Which of the following will have a mesoisomer? (a) 2, 3- Dichloropentane (b) 2, 3-Dichlorobutane (c) 2-Chlorobutane (d) 2-Hydroxypropanoic acid 4. o-Methoxybromobenzene is treated with sodamide and then with ammonia. The product formed is (a) o-Methoxyaniline (b) Aniline (c) Methoxybenzene (d) m-Methoxyaniline 5. Which of the following statements is wrong? (a) Ethyl chloride on reduction with Zn-Cu couple and alcohol gives ethane. (b) The reaction of methyl magnesium bromide with acetone gives butanol- 2. (c) Alkyl halides follow the following reactivity sequence on reaction with alkenes. R – I > R – Br > R – Cl > R – I (d) C 2 H 4 Cl 2 may exist in two isomeric forms 6. An organic compound A (C 4 H 9 Cl) on reaction withNa/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is (a) tert-butyl chloride (b) sec-butyl chloride (c) isobutyl chloride (d) n-butyl chloride 7. The reaction of toluene with in presence of gives and reaction in presence of light gives ‘Y’. Thus, ‘X’ and ‘Y’ are : (a) X = Benzal chloride, Y = o – Chlorotoluene (b) X = m – Chlorotoluene, Y = p –Chlorotoluene (c) X = o –and p – Chlorotoluene, Y = Trichloromethylbenzene (d) X = Benzyl chloride, Y = m – Chlorotoluene 8. . The decreasing order of the rate of the above reaction with nucleophiles (Nu – ) A to D is [Nu – = (A) PhO – , (B) AcO – , (C) HO – , (D) CH 3 O – ] (a) A > B > C > D (b) B > D > C > A (c) D > C > A > B (d) D > C > B > A 9. The Wurtz-Fittig reaction involves condensation of : (a) two molecules of aryl halides. (b) one molecule of each of aryl-halide and alkyl-halide. (c) one molecule of each of aryl-halide and phenol. (d) two molecules of aralkyl-halides. 10. The major organic compound formed by the reaction of1, 1, 1- trichloroethane with silver powder is: (a) Acetylene (b) Ethene (c) 2 - Butyne (d) 2 - Butene 11. Which of the following pairs of compounds are enantiomers? (a) (b) (c) (d) 12. Iodoform can be prepared from all except : (a) Ethyl methyl ketone (b) Isopropyl alcohol (c) 3-Methyl 2-butanone (d) Isobutyl alcohol 13. The reagent(s) for the following conversion, Page 5 PART-I (Single Correct MCQs) 1. Reaction of trans 2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces (a) 1-phenylcyclopentene (b) 3-phenylcyclopentene (c) 4-phenylcyclopentene (d) 2-phenylcyclopentene 2. The structure of the major product formed in the following reaction is (a) (b) (c) (d) 3. Which of the following will have a mesoisomer? (a) 2, 3- Dichloropentane (b) 2, 3-Dichlorobutane (c) 2-Chlorobutane (d) 2-Hydroxypropanoic acid 4. o-Methoxybromobenzene is treated with sodamide and then with ammonia. The product formed is (a) o-Methoxyaniline (b) Aniline (c) Methoxybenzene (d) m-Methoxyaniline 5. Which of the following statements is wrong? (a) Ethyl chloride on reduction with Zn-Cu couple and alcohol gives ethane. (b) The reaction of methyl magnesium bromide with acetone gives butanol- 2. (c) Alkyl halides follow the following reactivity sequence on reaction with alkenes. R – I > R – Br > R – Cl > R – I (d) C 2 H 4 Cl 2 may exist in two isomeric forms 6. An organic compound A (C 4 H 9 Cl) on reaction withNa/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is (a) tert-butyl chloride (b) sec-butyl chloride (c) isobutyl chloride (d) n-butyl chloride 7. The reaction of toluene with in presence of gives and reaction in presence of light gives ‘Y’. Thus, ‘X’ and ‘Y’ are : (a) X = Benzal chloride, Y = o – Chlorotoluene (b) X = m – Chlorotoluene, Y = p –Chlorotoluene (c) X = o –and p – Chlorotoluene, Y = Trichloromethylbenzene (d) X = Benzyl chloride, Y = m – Chlorotoluene 8. . The decreasing order of the rate of the above reaction with nucleophiles (Nu – ) A to D is [Nu – = (A) PhO – , (B) AcO – , (C) HO – , (D) CH 3 O – ] (a) A > B > C > D (b) B > D > C > A (c) D > C > A > B (d) D > C > B > A 9. The Wurtz-Fittig reaction involves condensation of : (a) two molecules of aryl halides. (b) one molecule of each of aryl-halide and alkyl-halide. (c) one molecule of each of aryl-halide and phenol. (d) two molecules of aralkyl-halides. 10. The major organic compound formed by the reaction of1, 1, 1- trichloroethane with silver powder is: (a) Acetylene (b) Ethene (c) 2 - Butyne (d) 2 - Butene 11. Which of the following pairs of compounds are enantiomers? (a) (b) (c) (d) 12. Iodoform can be prepared from all except : (a) Ethyl methyl ketone (b) Isopropyl alcohol (c) 3-Methyl 2-butanone (d) Isobutyl alcohol 13. The reagent(s) for the following conversion, is/are (a) alcoholic KOH (b) alcoholic KOH followed by NaNH 2 (c) aqueous KOH followed by NaNH 2 (d) Zn/CH 3 OH 14. In a nucleophilic substitution reaction: , which one of the following undergoes complete inversion of configuration? (a) (C 6 H 5 ) 2 CH(Br) (b) C 6 H 5 CH 2 Br (c) C 6 H 5 CH(CH 3 )(Br) (d) (C 6 H 5 ) 2 C(CH 3 )(Br) 15. Chlorobenzene reacts with trichloro acetaldehyde in the presence of H 2 SO 4 . The major product formed is: (a) (b) (c)Read More
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