MHT CET202525 Apr 2025Evening ShiftChemistryAminesActual
Which from following amines on heating with chloroform and ethanolic potassium hydroxide produces foul smell?
Options
- A( CH ₃ )₃ ~N
- B( CH ₃ )₂ NH
- C( CH ₃ CH ₂ )₂ NH
- DCH ₃ CH ₂ NH ₂
Correct answer
D. CH ₃ CH ₂ NH ₂
Step-by-step solution
The Carbylamine reaction occurs specifically with primary amines, forming isocyanides that produce a foul odor. The general equation is: R-NH₂ + CHCl₃ + 3KOH (alc) heat R-NC + 3KCl + 3H₂O Analysis of the compounds: Option A, ( CH ₃ )₃ N , is a tertiary amine and does not react. Option B, ( CH ₂ )₂ NH , is a secondary amine and does not react. Option C, ( CH ₃ CH ₂ )₂ NH , is a secondary amine and does not react. Option D, CH ₃ CH ₂ NH ₂ , is a primary amine, undergoes the reaction, and produces the foul-smelling et