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Chemistry · Nitrogen Containing Organic Compounds

JEE Main 2026 — 24 January, Evening Shift — Question 62

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :

Statement I : The dipole moment of R-CN is greater than R−NC\mathrm{R}-\mathrm{NC} and R−NC\mathrm{R}-\mathrm{NC} can undergo hydrolysis under acidic medium to produce

Statement II : R-CN hydrolyses under acidic medium to produce a compound which on treatment with SOCl2\mathrm{SOCl}_{2}, followed by the addition of NH3\mathrm{NH}_{3} gives another compound(x). This compound (x) on treatment with NaOCl/NaOH\mathrm{NaOCl} / \mathrm{NaOH} gives a product, that on treatment with CHCl3/KOH/Δ\mathrm{CHCl}_{3} / \mathrm{KOH} / \Delta produces R-NC

In the light of the above statements, choose the correct answer from the options given below :

  1. Option A:

    Both Statement I and Statement II are false

  2. Option B:

    Both Statement I and Statement II are true

  3. Option C:

    Statement I is true but Statement II is false

  4. Option D:

    Statement I is false but Statement II is true

    Correct

Answer: D

Step-by-step solution

Statement I : False R−NC→H3O+R−NH2+HCOOH\mathrm{R}-\mathrm{NC} \xrightarrow{\mathrm{H}_{3} \mathrm{O}^{+}} \mathrm{R}-\mathrm{NH}_{2}+\mathrm{HCOOH} Statement II : True R−CN→H3O+RCOOH→SOCl2RCOCl\mathrm{R}-\mathrm{CN} \xrightarrow{\mathrm{H}_{3} \mathrm{O}^{+}} \mathrm{RCOOH} \xrightarrow{\mathrm{SOCl}_{2}} \mathrm{RCOCl} →NH3RCONH2→NaOCl/OH−RNH2\xrightarrow{\mathrm{NH}_{3}} \mathrm{RCONH}_{2} \xrightarrow{\mathrm{NaOCl} / \mathrm{OH}^{-}} \mathrm{RNH}_{2} →CHCl3+KOHR−NC\xrightarrow{\mathrm{CHCl}_{3}+\mathrm{KOH}} \mathrm{R}-\mathrm{NC}

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
24 January, Evening Shift
Subject
Chemistry
Chapter
Nitrogen Containing Organic Compounds
Topic
Diazonium salts

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