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JEE Main 202623 JanuaryEvening Shift
Exam
JEE Main
Year
2026
Date
23 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Amines

JEE Main 2026 · 23 January · Evening Shift · Chemistry · Amines

A student has been given a compound " x " of molecular formula- C_...

A student has been given a compound " xx " of molecular formula- C6H7 N\mathrm{C}_{6} \mathrm{H}_{7} \mathrm{~N}. ' xx ' is sparingly soluble in water. However, on addition of dilute mineral acid, ' xx ' becomes soluble in water. ' xx ' when treated with CHCl3\mathrm{CHCl}_{3} and KOH(\mathrm{KOH}( alc )), ' yy ' is produced. ' y ' has a specific unpleasant smell. On treatment with benzenesulphonyl chloride, ' xx ' gives a compound ' zz ' which is soluble in alkali. The number of different " HH " atoms present in ' zz ' is:-A student has been given a compound " x " of molecular formula- C_ 6 H_ 7 ~N . ' x ' is sparingly soluble in water.

Options

  1. A8
  2. B4
  3. C5
  4. D7

Correct answer

D. 7

Step-by-step solution

Compound X has molecular formula C6H7NC_6H_7N, is sparingly soluble in water but soluble in dilute mineral acid → primary aromatic amine (aniline).
X with CHCl3+KOH (alc.)\text{CHCl}_3 + \text{KOH (alc.)} gives Y with unpleasant smell → carbylamine reaction, confirms primary amine.
X with benzenesulphonyl chloride gives Z which is soluble in alkali → Hinsberg test confirms primary amine. Z is N-phenylbenzenesulfonamide.
Structure of Z: C6H5-NH-SO2-C6H5\text{C}_6\text{H}_5\text{-NH-SO}_2\text{-C}_6\text{H}_5
A student has been given a compound " x " of molecular formula- C_ 6 H_ 7 ~N . ' x ' is sparingly soluble in water.
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