Which of the following amines does not react with acetyl chloride?

Find the major product of the following reaction:
$C_6H_5NHCOC_6H_5 \xrightarrow{conc. HNO_3 + conc. H_2SO_4} \text{Major product}$

What is the number of moles of hydrogen atoms required to reduce one mole of nitroethane completely using $Sn$ and $HCl$?

Assertion : Amines are basic in nature.
Reason : Presence of a lone pair of electrons on the nitrogen atom.

Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives

For the diazonium ions,the order of reactivity towards the diazo-coupling with phenol in the presence of dilute $NaOH$ is:
$(I)$ $Me_2N-C_6H_4-N_2^+$
$(II)$ $O_2N-C_6H_4-N_2^+$
$(III)$ $CH_3O-C_6H_4-N_2^+$
$(IV)$ $CH_3-C_6H_4-N_2^+$