Identify the principal organic product of the following reaction:
$1-bromo-2-fluoro-4-nitrobenzene + NaSCH_3 \rightarrow \text{product}$

Which among the following statements is true about the reactivity of haloarenes towards nucleophilic substitution reactions?
$1$. Haloarenes are very reactive towards nucleophilic substitution reaction.
$2$. In haloarenes,the $C-X$ bond acquires partial double bond character.
$3$. The $C-X$ bond in haloarenes is longer than the $C-X$ bond in haloalkanes.
$4$. In haloarenes,the phenyl cation formed as a result of self-ionisation is stable.

The only $o, p-$ directing group which is deactivating in nature is

The major product obtained from the reaction of $p-$chlorotoluene with $KNH_2$ in liquid $NH_3$ is ..........

Arrange the following groups in increasing order of reactivity towards electrophilic nitration reaction: $C_6H_6, C_6H_5Cl, C_6H_5COOH, C_6H_5NH_2$.

The major product $(F)$ in the following reaction is:
$3$-chloroanisole $\xrightarrow{NaNH_2 \text{ in liquid } NH_3} F$