What is the product formed when benzene diazonium chloride reacts with ethanol?

In which of the following will benzoic acid not be formed as a major product?

Complete reduction of $benzene-diazonium$ chloride with $Zn/HCl$ gives:

Alkylamine dissolves in hydrochloric acid to form alkylammonium chloride. The nitrogen in the latter salt is:

Identify the product $A$ in the following reaction:
$[(CH_3CH_2CH_2)(CH_3CH_2)_3N]^+ OH^- \xrightarrow{\Delta, -H_2O} A + (CH_3CH_2CH_2)(CH_3CH_2)_2N$

Explain the nitration and sulphonation of aniline.