Which of the following hydrogens is most easily abstracted on reaction with bromine free radicals,$Br^{\cdot}$?

The product $(B)$ in the above reaction is:

The hybridization involved in the six carbon atoms of benzene is

Treatment of benzene with $CO / HCl$ in the presence of anhydrous $AlCl_3 / CuCl$ followed by reaction with $Ac_2O / NaOAc$ gives compound $X$ as the major product. Compound $X$ upon reaction with $Br_2 / Na_2CO_3$,followed by heating at $473 \ K$ with moist $KOH$ furnishes $Y$ as the major product. Reaction of $X$ with $H_2 / Pd-C$,followed by $H_3PO_4$ treatment gives $Z$ as the major product.
$(1)$ The compound $Y$ is
$(2)$ The compound $Z$ is
Identify the correct options for $(1)$ and $(2)$ respectively.

Toluene is oxidised to benzoic acid by

The major product $B$ of the following reaction has . . . . . . . $\pi$-bonds.