Preparation and properties of amines — NEET & JEE Questions

Question 1 · difficulty L1 · recall

Reduction of a nitro compound such as nitrobenzene commonly gives

• A. an amine
• B. an alcohol
• C. an aldehyde
• D. a carboxylic acid

Question 2 · difficulty L2 · understanding

Reduction of a nitrile $R-CN$ generally produces

• A. $RCH_2NH_2$
• B. $RCONH_2$
• C. $RCOOH$
• D. $ROH$

Question 3 · difficulty L2 · understanding

The Gabriel phthalimide synthesis is especially useful for preparing

• A. primary aliphatic amines
• B. secondary amines only
• C. tertiary amines only
• D. quaternary ammonium salts

Question 4 · difficulty L2 · understanding

Amines react with mineral acids such as HCl to form

• A. ammonium salts
• B. alkenes
• C. ethers
• D. carboxylic acids

Question 5 · difficulty L3 · application

What is the major organic product when ethanenitrile, $CH_3CN$, is completely reduced?

• A. Methanamine
• B. Ethanamine
• C. Propanamine
• D. Ethanal

Question 6 · difficulty L3 · application

Aniline reacts with hydrochloric acid. Which product is formed?

• A. Anilinium chloride
• B. Chlorobenzene
• C. Benzamide
• D. Phenol

Question 7 · difficulty L3 · application

Which reagent can reduce nitrobenzene to aniline?

• A. $Sn/HCl$
• B. $NaCl$ solution
• C. dilute $NaOH$ only
• D. $Br_2$ water only

Question 8 · difficulty L3 · application

A primary amide $RCONH_2$ is converted to a primary amine containing one fewer carbon atom by

• A. Hofmann bromamide degradation
• B. simple hydrolysis
• C. oxidation with $KMnO_4$
• D. esterification

Question 9 · difficulty L4 · application

Which sequence converts nitrobenzene into aniline and then into an anilinium salt?

• A. Reduction, followed by treatment with HCl
• B. Oxidation, followed by treatment with NaOH
• C. Hydrolysis, followed by bromination
• D. Reduction, followed by treatment with Na metal

Question 10 · difficulty L4 · application

An amide $CH_3CH_2CONH_2$ undergoes Hofmann bromamide degradation. Which amine is formed?

• A. Methanamine
• B. Ethanamine
• C. Propanamine
• D. Butanamine