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Amines · Question 31

AIPMT 2015 (Cancelled)MCQMedium📈 Topic in 75% papers+4−1
1

The electrolytic reduction of nitrobenzene in strongly acidic medium produces

  1. azobenzene
  2. aniline
  3. p-aminophenol
  4. azoxybenzene.

Answer

(3) p-aminophenol

Solution

In strongly acidic medium, electrolytic reduction of nitrobenzene stops at N-phenylhydroxylamine:

C6H5NO2 4[H] C6H5NHOH + H2O

In the strong acid, C6H5NHOH rearranges to p-aminophenol:

C6H5NHOH H+ p-HO-C6H4-NH2

Answer: (3)

AIPMT 2015 (Cancelled)

Keep practising — Amines

2

In the following reaction, the product (A) is [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2014
3

Which of the following will be most stable diazonium salt RN2+X-?

  1. CH3N2+X-
  2. C6H5N2+X-
  3. CH3CH2N2+X-
  4. C6H5CH2N2+X-
AIPMT 2014
4

In the reaction [figure] A is

  1. H3PO2 and H2O
  2. H+/H2O
  3. HgSO4/H2SO4
  4. Cu2Cl2
NEET 2013
5

On hydrolysis of a "compound", two compounds are obtained. One of which on treatment with sodium nitrite and hydrochloric acid gives a product which does not respond to iodoform test. The second one reduces Tollens reagent and Fehling's solution. The "compound" is

  1. CH3CH2CH2NC
  2. CH3CH2CH2CN
  3. CH3CH2CH2ON=O
  4. CH3CH2CH2CON(CH3)2
NEET 2013 (Karnataka)
6

Some reactions of amines are given. Which one is not correct?

  1. [figure]
  2. CH3CH2NH2 + HNO2 CH3CH2OH + N2
  3. CH3NH2 + C6H5SO2Cl CH3NHSO2C6H5
  4. (CH3)2NH + NaNO2 + HCl (CH3)2N-N=O
NEET 2013 (Karnataka)
7

An organic compound (C3H9N) (A), when treated with nitrous acid, gave an alcohol and N2 gas was evolved. (A) on warming with CHCl3 and caustic potash gave (C) which on reduction gave isopropylmethylamine. Predict the structure of (A)

  1. [figure]
  2. CH3CH2-NH-CH3
  3. [figure]
  4. CH3CH2CH2-NH2
AIPMT 2012 (Mains)
8

An organic compound A on treatment with NH3 gives B, which on heating gives C. C when treated with Br2 in the presence of KOH produces ethyl amine. Compound A is

  1. CH3COOH
  2. CH3CH2CH2COOH
  3. [figure]
  4. CH3CH2COOH
AIPMT 2011 (Mains)
9

Which of the following compounds is most basic?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Mains)
10

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]
AIPMT 2011 (Prelims)
11

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Prelims)

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