The reaction given below is known as:
$ArN_2^+ X^- + Cu_2Cl_2 + HCl \to ArCl + N_2 + Cu_2Cl_2$

The strongest nucleophile is

Which of the following arylamines will not form a diazonium salt on reaction with sodium nitrite in hydrochloric acid?

Given below are two statements:
Statement $I$: Aniline is less basic than acetamide.
Statement $II$: In aniline,the lone pair of electrons on nitrogen atom is delocalised over benzene ring due to resonance and hence less available to a proton.
Choose the most appropriate option:

Aniline when treated with $HNO_2$ and $HCl$ at $0\,^oC$ gives

The compound which on reaction with aqueous nitrous acid $(HNO_2)$ at low temperature produces an oily nitrosoamine is