In the reaction $C_6H_5NH_2 + CHCl_3 + 3KOH \rightarrow A + 3KCl + 3H_2O$,what is '$A$'?

Which of the following undergoes nitration fastest?

In the reaction shown,the structure of the product $T$ is:

With respect to the following reaction,consider the given statements:
$C_6H_5NH_2 \xrightarrow{HNO_3, H_2SO_4, 288 \ K} \text{products}$
$(A)$ $o$-Nitroaniline and $p$-nitroaniline are the predominant products.
$(B)$ $p$-Nitroaniline and $m$-nitroaniline are the predominant products.
$(C)$ $HNO_3$ acts as an acid.
$(D)$ $H_2SO_4$ acts as an acid.

$A$ mixture containing the following four compounds is extracted with $1 \, M \, HCl$. The compound that goes to the aqueous layer is:
$(I)$ Cyclohexyl methyl sulfide
$(II)$ $N$-methylcyclohexylamine
$(III)$ Methoxycyclohexane
$(IV)$ Cyclohexyl methyl ketone

Identify $(a)$ and $(b)$ in the following reaction:
$CH_3CH_2NH_2 + CHCl_3 + 3KOH \rightarrow (a) + (b) + 3H_2O$