Nitration of which among the following compounds yields cyclonite?

Consider the following reaction:
$C_6H_5NO_2$ $\xrightarrow{Sn / HCl} X$ $\xrightarrow{C_6H_5COCl} Y + HCl$
What is $Y$?

What is the correct order of basic strength in substituted amines in an aqueous solution?

The major products $A$ and $B$ formed in the following reaction sequence are :

Arrange the following in increasing order of their basic strength:
$(i)$ $C_2H_5NH_2, C_6H_5NH_2, NH_3, C_6H_5CH_2NH_2$ and $(C_2H_5)_2NH$
$(ii)$ $C_2H_5NH_2, (C_2H_5)_2NH, (C_2H_5)_3N, C_6H_5NH_2$
$(iii)$ $CH_3NH_2, (CH_3)_2NH, (CH_3)_3N, C_6H_5NH_2, C_6H_5CH_2NH_2$

Explain the acylation of ethanamine and aniline.