Verified Solution • 2025–26 Session moderate

QJEEM23Ch4151: JEE Main 2023 Chemistry - Class 12 JEEM23Ch4151 Solution: Isomeric amines with molecular formula C H N give the following …

Isomeric amines with molecular formula C 8_8 H 11_{11} N give the following tests

Isomer (P) ⇒\Rightarrow Can be prepared by Gabriel phthalimide synthesis

Isomer (Q) ⇒\Rightarrow Reacts with Hinsberg's reagent to give solid insoluble in NaOH

Isomer (R) ⇒\Rightarrow Reacts with HONO followed by β\beta -naphthol in NaOH to give red dye.

Isomers (P), (Q) and (R) respectively are

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/3d82b38a2865d901b78c3a9ad9818be1ca0e9743a164aba0962e4fc3b9ce2d15.webp
  • B https://ik.imagekit.io/novatra/photos/6a033346b102fb5789e099df09550fe9f460b657ee367a3b0393c3022db196ea.webp
  • C https://ik.imagekit.io/novatra/photos/b01e9cda4ad871931127b00b1390f3179681842818c78c1e9991d2e4ef61d414.webp
  • D https://ik.imagekit.io/novatra/photos/00e74113d7efd6c1f26b34a5159d5649ac455337b57b6f43cd5dbd47790f04fc.webp

Step-by-Step Verified Solution

(P) Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines. Aromatic primary amines cannot be prepared by this method.

(Q) 2∘2^{\circ} -amines reacts with Hinsberg's reagent to give solid insoluble in NaOH\mathrm{NaOH}

(R) Aromatic primary amine react with nitrous acid at low temperature (273−298 K)(273-298 \mathrm{~K}) to form diazonium salts, which form Red dye with β\beta Naphthol

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