Which of the following compounds is obtained when acetamide is warmed with bromine and excess conc. $KOH_{(aq)}$ solution?

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.

Among the following,the weakest base is:

The reagent used for the protection of the amino group during the nitration of aniline is:

How many moles of iodomethane are consumed in the following conversion?
$CH_3NH_2 \xrightarrow[\Delta]{CH_3I} (CH_3)_4N^{+}I^{-}$

The order of boiling points of the following compounds is:
$1$. $(CH_3)_3N$
$2$. $CH_3CH_2CH_2NH_2$
$3$. $CH_3CH_2NHCH_3$