In the following reaction,the major product is:

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

Which of the following sets of functional groups contains only meta-directing groups?

Identify the incorrect match in the following reactions:

What are $Y$ and $Z$ respectively in the following reaction sequence?
Chlorobenzene $\xrightarrow[Conc. H_2SO_4]{HNO_3}$ $X$ (major product) $\xrightarrow{Y}$ $Z$

Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile,$E^{+}$:
$(a)$ Chlorobenzene,$2,4-$dinitrochlorobenzene,$p-$nitrochlorobenzene
$(b)$ Toluene,$p-CH_3-C_6H_4-NO_2$,$p-O_2N-C_6H_4-NO_2$