Identify correct statements : Choose the correct answer from the options given below :
- (B) and (C) only
- (D) and (E) only
- (A) and (B) only
- (B) and (D) only
Answer
(4) (B) and (D) only
Solution
(A) Primary amines react with NaNO2/HCl (nitrous acid) to form diazonium salts (stable for aromatic amines at 273–278 K, unstable for aliphatic ones) incorrect.
(B) R-NH2 + CHCl3 + 3KOH R-NC + 3KCl + 3H2O; both aliphatic and aromatic 1° amines form foul-smelling isocyanides (carbylamines) correct.
(C) The carbylamine test is given only by primary amines incorrect.
(D) Benzenesulphonyl chloride (C6H5SO2Cl) is Hinsberg's reagent correct.
(E) Tertiary amines have no H on nitrogen, so they do not react with benzenesulphonyl chloride incorrect.
Correct: (B) and (D).
Answer: (4)