Amines NEET Previous Year Questions (PYQs)
Practice NEET previous year questions from Amines. These chapter-wise MCQs cover basicity, reactions, diazonium salts and named reactions with answers and clear explanations.
👉 Read theory:
Amines Chapter Notes
Q1. The correct order of basic strength of methyl substituted amines in aqueous solution is:
(NEET 2019)
- (A) (CH3)3N > (CH3)2NH > CH3NH2
- (B) (CH3)2NH > CH3NH2 > (CH3)3N
- (C) CH3NH2 > (CH3)2NH > (CH3)3N
- (D) (CH3)3N > CH3NH2 > (CH3)2NH
Show Answer
(B)
Show Explanation
In aqueous solution, secondary amines are most basic due to optimum +I effect and hydrogen bonding.
Q2. The amine that reacts with Hinsberg’s reagent to give an alkali insoluble product is:
(Odisha NEET 2019)
- (A) Primary amine
- (B) Secondary amine
- (C) Tertiary amine
- (D) Ammonia
Show Answer
(B)
Show Explanation
Secondary amines form sulphonamides without acidic hydrogen and hence are insoluble in alkali.
Q3. Nitration of aniline in strongly acidic medium gives m-nitroaniline because:
(NEET 2018)
- (A) Nitro group is always meta directing
- (B) Amino group is meta directing
- (C) Aniline is present as anilinium ion
- (D) Nitro group attacks only meta position
Show Answer
(C)
Show Explanation
In acidic medium, aniline forms anilinium ion which is meta directing.
Q4. Which reaction is suitable for converting acetamide to methanamine?
(NEET 2017)
- (A) Hoffmann bromamide reaction
- (B) Stephen’s reaction
- (C) Gabriel synthesis
- (D) Carbylamine reaction
Show Answer
(A)
Show Explanation
Hoffmann bromamide reaction reduces the carbon chain by one carbon.
Q5. Arylamines are less basic than alkylamines because:
(NEET 2016)
- (A) Nitrogen is sp-hybridised
- (B) Lone pair is delocalised into benzene ring
- (C) Alkyl group is absent
- (D) Aryl group withdraws electrons by +I effect
Show Answer
(B)
Show Explanation
Resonance delocalisation of lone pair reduces availability for protonation.
Q6. Electrolytic reduction of nitrobenzene in strongly acidic medium produces:
(NEET 2015)
- (A) Azobenzene
- (B) Aniline
- (C) p-Aminophenol
- (D) Azoxybenzene
Show Answer
(C)
Show Explanation
In strongly acidic medium, rearrangement leads to p-aminophenol.
Q7. Which diazonium salt is most stable?
(NEET 2014)
- (A) Alkyl diazonium salt
- (B) Benzene diazonium salt
- (C) Methyl diazonium salt
- (D) Ethyl diazonium salt
Show Answer
(B)
Show Explanation
Aromatic diazonium salts are stabilised by resonance.
Q8. Nitrobenzene on reaction with concentrated HNO3 and H2SO4 forms:
(NEET 2013)
- (A) o-Dinitrobenzene
- (B) p-Dinitrobenzene
- (C) m-Dinitrobenzene
- (D) Trinitrobenzene
Show Answer
(C)
Show Explanation
Nitro group is a strong meta-directing group.
Q9. Which compound gives carbylamine test?
(NEET 2011)
- (A) Primary amine
- (B) Secondary amine
- (C) Tertiary amine
- (D) Amide
Show Answer
(A)
Show Explanation
Only primary amines give carbylamine test.
Q10. Reduction of nitroethane with LiAlH4 gives:
(NEET 2007)
- (A) Ethylamine
- (B) Diethylamine
- (C) Acetamide
- (D) Ethanol
Show Answer
(A)
Show Explanation
Nitro compounds reduce to corresponding amines.
Q11. Benzylamine is more basic than aniline because:
(NEET 2006)
- (A) Lone pair is delocalised
- (B) Lone pair is not delocalised
- (C) −I effect of phenyl group
- (D) Hydrogen bonding is absent
Show Answer
(B)
Show Explanation
Lone pair on nitrogen in benzylamine is not involved in resonance.
Q12. Electrolytic reduction of nitrobenzene in weakly acidic medium gives:
(NEET 2005)
- (A) Aniline
- (B) p-Aminophenol
- (C) Azoxybenzene
- (D) Nitrosobenzene
Show Answer
(A)
Show Explanation
Weakly acidic medium favours formation of aniline.
Q13. Which reaction converts amide to amine with one carbon less?
(NEET 1999)
- (A) Hoffmann bromamide reaction
- (B) Claisen condensation
- (C) Perkin reaction
- (D) Friedel–Crafts reaction
Show Answer
(A)
Show Explanation
This reaction shortens the carbon chain by one carbon.
Q14. Phenyl isocyanide is prepared by:
(NEET 1999)
- (A) Reimer–Tiemann reaction
- (B) Carbylamine reaction
- (C) Wurtz reaction
- (D) Rosenmund reaction
Show Answer
(B)
Show Explanation
Carbylamine reaction produces isocyanides from primary amines.
Q15. Primary aliphatic amines react with nitrous acid to give:
(NEET 1994)
- (A) Nitroalkane
- (B) Alcohol
- (C) Secondary amine
- (D) Alkyl nitrite
Show Answer
(B)
Show Explanation
Unstable diazonium salts decompose to alcohols.
Q16. Which nitrogen compound undergoes Hoffmann bromamide reaction?
(NEET 1989)
- (A) Amide
- (B) Amine
- (C) Nitro compound
- (D) Nitrile
Show Answer
(A)
Show Explanation
Amides are converted into primary amines.
Q17. Carbylamine reaction is used to distinguish:
(NEET 1992)
- (A) Primary amines
- (B) Secondary amines
- (C) Tertiary amines
- (D) Amides
Show Answer
(A)
Show Explanation
Only primary amines form isocyanides with foul smell.
Q18. Which compound is least basic?
(NEET 1994)
- (A) Cyclohexylamine
- (B) Aniline
- (C) Benzamide
- (D) Methylamine
Show Answer
(C)
Show Explanation
Lone pair on nitrogen in benzamide is delocalised with carbonyl group.
Q19. Which compound gives p-nitroso derivative on reaction with nitrous acid?
(NEET 2013)
- (A) Primary aromatic amine
- (B) Secondary aromatic amine
- (C) Tertiary aromatic amine
- (D) Aliphatic amine
Show Answer
(C)
Show Explanation
Tertiary aromatic amines undergo electrophilic substitution.
Q20. Which compound on partial hydrolysis gives acetamide?
(NEET 1995)
- (A) Acetonitrile
- (B) Ethylamine
- (C) Nitroethane
- (D) Ethyl isocyanide
Show Answer
(A)
Show Explanation
Partial hydrolysis of nitriles gives amides.
👉 More Amines NEET PYQs will be added gradually.