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Amines

AIPMT 2011 (Prelims)MCQMedium📈 Topic in 75% papers+4−1
Ques. 1AIPMT 2011 (Prelims)

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

Answer

(3) [figure]

Solution

A (m-bromobenzoic acid) SOCl2 B = m-bromobenzoyl chloride, m-BrC6H4COCl

B NH3 C = m-bromobenzamide, m-BrC6H4CONH2

C NaOH/Br2 D: Hoffmann bromamide degradation removes the C=O carbon and gives the amine with one carbon less.

BrC6H4CONH2 + Br2 + 4NaOH

BrC6H4NH2 + Na2CO3 + 2NaBr + 2H2O

D = m-bromoaniline (3-bromoaniline)

Answer: (3)

Keep practising — Amines

Ques. 2AIPMT 2011 (Prelims)

What is the product obtained in the following reaction? [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 3AIPMT 2010 (Mains)

Match the compounds given in List-I with their characteristic reactions given in List-II. Select the correct option.

  1. A-(ii), B-(i), C-(iv), D-(iii)
  2. A-(iii), B-(ii), C-(i), D-(iv)
  3. A-(ii), B-(iii), C-(i), D-(iv)
  4. A-(iv), B-(ii), C-(iii), D-(i)
Ques. 4AIPMT 2010 (Prelims)

Acetamide is treated with the following reagents separately. Which one of these would yield methyl amine?

  1. NaOH/Br2
  2. Sodalime
  3. Hot conc. H2SO4
  4. PCl5
Ques. 5AIPMT 2010 (Prelims)

Which of the following statements about primary amines is false?

  1. Alkyl amines are stronger bases than aryl amines.
  2. Alkyl amines react with nitrous acid to produce alcohols.
  3. Aryl amines react with nitrous acid to produce phenols.
  4. Alkyl amines are stronger bases than ammonia.
Ques. 6AIPMT 2010 (Prelims)

Aniline in a set of the following reactions yielded a coloured product Y. [figure] The structure of 'Y' would be

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7AIPMT 2009

Predict the product. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 8AIPMT 2008

In a reaction of aniline a coloured product C was obtained. [figure] The structure of C would be

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 9AIPMT 2007

Which one of the following on reduction with lithium aluminium hydride yields a secondary amine?

  1. Methyl isocyanide
  2. Acetamide
  3. Methyl cyanide
  4. Nitroethane
Ques. 10AIPMT 2006

In a set of reactions propionic acid yielded a compound D. CH3CH2COOH SOCl2 B NH3 C [Br2]KOH D The structure of D would be

  1. CH3CH2NH2
  2. CH3CH2CH2NH2
  3. CH3CH2CONH2
  4. CH3CH2NHCH3
Ques. 11AIPMT 2006

Which of the following is more basic than aniline?

  1. Benzylamine
  2. Diphenylamine
  3. Triphenylamine
  4. p-Nitroaniline

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