This section contains multiple choice questions. Each question has 4 choices
(a), (b), (c) and (d), out of which ONLY ONE is correct.
An ice cold solution of aniline in \(\mathrm{HCl}\) is treated with
\(\mathrm{NaNO}_{2}\). The compound (A) thereby formed is tested for nitrogen
using Lassaigne's test. The result would be
(a) a Prussian blue colour confirming the presence nitrogen in aniline.
(b) a green colour confirming the presence of nitrogen in aniline
(c) an absence of any coloured solution to confirm the presence of nitrogen
(d) evolution of ammonia which gives a colour with Nessler's reagent.