Consider the following sequence of reactions.

Assuming that the reaction proceeds to completion, then 137 mg of 4-nitrotoluene will produce

$\_\_\_\_$ mg of $B$.

(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{~N}: 14, \mathrm{O}: 16, \mathrm{Br}: 80$ )

Given below are two statements :

Statement I : Sublimation is used for the separation and purification of compounds with low melting point.

Statement II : The boiling point of a liquid increases as the external pressure is reduced. In the light of the above statements,

choose the correct answer from the options given below :

$$ \text { Compound ' } \mathrm{P} \text { ' undergoes the following sequence of reactions : } $$

$$ ' \mathrm{P}^{\prime} \text { is : } $$

$$ \text { Consider the following compounds } $$

$$ \text { Arrange these compounds in the increasing order of reactivity with nitrating mixture. } $$