ORGANIC CHEMISTRY
NEET DROPPER
PARAKRAM
QUESTION BANK
Amines
Aryabhatta Tower, A-51(A), Road No.3, Behind City Mall, Indraprastha
Industrial Area, Kota, Rajasthan 324005, Mo. No. +917019243492
,
, 1
VIDYAPEETH
Amines
1. In the given reaction, 6. In the given reaction,
NO2 ? NH2 NH3 + RX ⎯⎯
→ RNH2 ⎯⎯→
RX
R 2 NH
(1º ) ( 2º )
⎯⎯→ R3 N ⎯⎯→ R 4 NX−
RX RX
Which of the following reagents is/are used? (3º )
(1) H2/Pd, ethanol (2) Sn +HCl Select an appropriate statement(s) about the
(3) Fe + HCl (4) All of these reaction-
(1) In this reaction, NH3 act as a nucleophile
2. Assertion (A): Fe + HCl is preferred as a reagent (2) In this reaction, RX is the nucleophile
in the reduction of nitroalkanes to alkanamines. (3) R 4 N X− is called quaternary ammonium salt
Reason (R): Iron scrap and HCl is cheap.
(4) Both (1) and (3)
(1) Both A and R are correct; R is the correct
explanation of A
7. Assertion (A): Aromatic primary amines cannot be
(2) Both A and R are correct; R is not the correct
prepared by Gabriel phthalimide synthesis.
explanation of A
Reason (R): Aryl halides do not undergo
(3) A is correct; R is incorrect
electrophilic substitution with anion formed by
(4) A is incorrect; R is correct
phthalimide.
(1) Both A and R are correct; R is the correct
3. The alkyl or benzyl halide on reaction with an
explanation of A
ethanolic solution of ammonia yield a product via- (2) Both A and R are correct; R is not the correct
(1) nucleophilic substitution reaction explanation of A
(2) electrophilic substitution reaction (3) A is correct; R is incorrect
(3) nucleophilic addition reaction (4) A is incorrect; R is correct
(4) electrophilic addition reaction
8. In ammonolysis, primary amine is obtained as a
4. Select the correct statement(s) about ammonolysis. major product by taking-
(1) It is the process of cleavage of the C-X bond (1) large excess of alkyl halide
by the ammonia molecule (2) large excess of ammonia
(2) This reaction is carried out in an open tube at (3) using high pressure
373 K (4) None of the above
(3) It is electrophilic addition reaction.
(4) None of the above 9. What is the correct order of reactivity of halides
with amines?
5. Assertion (A): Tertiary butylamine cannot be (1) RCl > RBr > RI
prepared by the action of NH3 on tert-butyl (2) RI > RBr > RCl
bromide. (3) RCl > RI > RBr
Reason (R): Tertiary butyl bromide being 3º alkyl (4) RI > RCl > RBr
halide prefers to undergo elimination on the
treatment with a base. 10. Which of the following reagents are required by the
(1) Both A and R are correct; R is the correct following conversion?
explanation of A ? C6H5CH2–N–CH3
(2) Both A and R are correct; R is not the correct CH3
explanation of A (1) C6H5CH2NH2, CH3Cl
(3) A is correct; R is incorrect (2) CH3Cl, CH3NH2
(4) A is incorrect; R is correct (3) CH3NH2, C6H5CH2Cl
(4) CH3CH2NH2, C6H5Cl
NEET DROPPER
PARAKRAM
QUESTION BANK
Amines
Aryabhatta Tower, A-51(A), Road No.3, Behind City Mall, Indraprastha
Industrial Area, Kota, Rajasthan 324005, Mo. No. +917019243492
,
, 1
VIDYAPEETH
Amines
1. In the given reaction, 6. In the given reaction,
NO2 ? NH2 NH3 + RX ⎯⎯
→ RNH2 ⎯⎯→
RX
R 2 NH
(1º ) ( 2º )
⎯⎯→ R3 N ⎯⎯→ R 4 NX−
RX RX
Which of the following reagents is/are used? (3º )
(1) H2/Pd, ethanol (2) Sn +HCl Select an appropriate statement(s) about the
(3) Fe + HCl (4) All of these reaction-
(1) In this reaction, NH3 act as a nucleophile
2. Assertion (A): Fe + HCl is preferred as a reagent (2) In this reaction, RX is the nucleophile
in the reduction of nitroalkanes to alkanamines. (3) R 4 N X− is called quaternary ammonium salt
Reason (R): Iron scrap and HCl is cheap.
(4) Both (1) and (3)
(1) Both A and R are correct; R is the correct
explanation of A
7. Assertion (A): Aromatic primary amines cannot be
(2) Both A and R are correct; R is not the correct
prepared by Gabriel phthalimide synthesis.
explanation of A
Reason (R): Aryl halides do not undergo
(3) A is correct; R is incorrect
electrophilic substitution with anion formed by
(4) A is incorrect; R is correct
phthalimide.
(1) Both A and R are correct; R is the correct
3. The alkyl or benzyl halide on reaction with an
explanation of A
ethanolic solution of ammonia yield a product via- (2) Both A and R are correct; R is not the correct
(1) nucleophilic substitution reaction explanation of A
(2) electrophilic substitution reaction (3) A is correct; R is incorrect
(3) nucleophilic addition reaction (4) A is incorrect; R is correct
(4) electrophilic addition reaction
8. In ammonolysis, primary amine is obtained as a
4. Select the correct statement(s) about ammonolysis. major product by taking-
(1) It is the process of cleavage of the C-X bond (1) large excess of alkyl halide
by the ammonia molecule (2) large excess of ammonia
(2) This reaction is carried out in an open tube at (3) using high pressure
373 K (4) None of the above
(3) It is electrophilic addition reaction.
(4) None of the above 9. What is the correct order of reactivity of halides
with amines?
5. Assertion (A): Tertiary butylamine cannot be (1) RCl > RBr > RI
prepared by the action of NH3 on tert-butyl (2) RI > RBr > RCl
bromide. (3) RCl > RI > RBr
Reason (R): Tertiary butyl bromide being 3º alkyl (4) RI > RCl > RBr
halide prefers to undergo elimination on the
treatment with a base. 10. Which of the following reagents are required by the
(1) Both A and R are correct; R is the correct following conversion?
explanation of A ? C6H5CH2–N–CH3
(2) Both A and R are correct; R is not the correct CH3
explanation of A (1) C6H5CH2NH2, CH3Cl
(3) A is correct; R is incorrect (2) CH3Cl, CH3NH2
(4) A is incorrect; R is correct (3) CH3NH2, C6H5CH2Cl
(4) CH3CH2NH2, C6H5Cl
