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Class XII · Chemistry

Organic Compounds Containing Nitrogen: NEET MCQ practice

124 practice questions on Organic Compounds Containing Nitrogen, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

124

Practice questions

56

Easy

68

Medium

0

Hard

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What Organic Compounds Containing Nitrogen covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

  • General methods of preparation, properties and reactions of amines
  • Nomenclature, classification, structure, basic character of primary/secondary/tertiary amines
  • Diazonium salts- importance in synthetic organic chemistry

Sample questions on Organic Compounds Containing Nitrogen

Try each one, then open the answer and explanation.

Question 1 · Practice question

What happens when phenol is treated with ammonia in the presence of anhydrous ZnCl₂?

  1. A.Alkane is formed
  2. B.Esters are formed
  3. C.Alkyl halide is formed
  4. D.Aniline is formed
Show answer

Answer: D. Aniline is formed

When phenol is treated with ammonia in presence of anhydrous ZnCl2 at high temperature, the –OH group is replaced by –NH2 to form aniline (ammonolysis). Options like alkane, esters, or alkyl halide come from other reagents and don't match the given reactants.

Question 2 · Practice question

When formaldehyde reacts with ammonia, a typical compound called hexamethylene tetramine is formed. How many six membered rings are present in this compound?

  1. A.4
  2. B.5
  3. C.9
  4. D.11
Show answer

Answer: A. 4

Hexamethylene tetramine (urotropine) has a cage-like adamantane structure comprising four fused six-membered rings. This is a straightforward recall from NCERT organic chemistry. The tempting option (d) 11 might confuse someone who miscounts rings incorrectly, but the standard fact is four six-membered rings.

Question 3 · Practice question

Reduction of alkanenitriles with sodium and alcohol or LiAlH₄ is called:

  1. A.Wolf-Kishner reduction
  2. B.Rosenmund reduction
  3. C.Mendius reaction
  4. D.Catalytic reduction
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Answer: C. Mendius reaction

The reduction of nitriles (R-CN) to primary amines using sodium and alcohol or LiAlH₄ is specifically called the Mendius reaction. Students might confuse it with Wolf-Kishner (for carbonyls) or Rosenmund (for acyl chlorides), but those involve different starting materials and reagents.

Question 4 · Practice question

The carbylamine reaction is given by compounds having:

  1. A.-CN group
  2. B.-NH₂ group
  3. C.-NO₂ group
  4. D.-NH₂OH group
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Answer: B. -NH₂ group

Carbylamine reaction is a specific test for primary amines (-NH₂ group). It is directly recalled from NCERT organic chemistry. The other functional groups (-CN, -NO₂, -NH₂OH) do not produce offensive-smelling isocyanide under those conditions.

Question 5 · Practice question

Hydrolysis of methyl cyanides with dil. mineral acids gives:

  1. A.Methanone
  2. B.Ethanoic acid
  3. C.Methanamine
  4. D.Methanal
Show answer

Answer: B. Ethanoic acid

Hydrolysis of alkyl cyanides (nitriles) like methyl cyanide (CH₃CN) with dilute mineral acids yields the corresponding carboxylic acid, here ethanoic acid (CH₃COOH). The wrong option 'methanamine' might tempt you because cyanides can be reduced to amines, but hydrolysis under acidic conditions gives acids, not amines. 'Methanal' is incorrect because nitriles do not hydrolyze to aldehydes under these conditions.

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