Which of the following is most reactive towards nitration?

The most appropriate product for the following reaction is:

In the Friedel-Crafts reaction,toluene can be prepared by using:

Which of the following statements is not correct?

Nitrobenzene can be prepared from benzene by using a mixture of conc. $HNO_3$ and conc. $H_2SO_4$. In the nitrating mixture,$HNO_3$ acts as a

The number of chlorine atoms present in the organic products $X$ and $Y$ of the following reactions,respectively,are:
$\text{Benzene} + 6Cl_2 \xrightarrow[\text{dark, cold}]{\text{Anhydr. } AlCl_3} X$
$\text{Benzene} + 3Cl_2 \xrightarrow{UV, 500 \text{ K}} Y$