Which one of these is not true for benzene?

Identify the final product $C$ in the following reaction sequence:
$1,3-\text{cyclohexadiene}$ $\xrightarrow{NBS} A$ $\xrightarrow{Aq. NaOH} B$ $\xrightarrow{Con. H_2SO_4, \Delta} C$

The nitration of benzene using nitric acid and sulfuric acid is an example of which of the following reactions?

The reaction sequence is as follows:
$1,4-dibromocyclohex-2-ene$ $\xrightarrow[{2 \, molar \, equivalent}]{{(CH_3)_2NH}} (A)$ $\xrightarrow{{BaO}} (B)$ $\xrightarrow[{ (2 \, molar \, equivalent) }]{{CH_3I}} (C)$ $\xrightarrow{{Ag_2O \, / \, H_2O}} (D) + 2(CH_3)_3N$
Identify the end product $(D)$ in the given sequence.

If $P$ and $S$ are toluene,identify $Q$ and $R$ respectively in the following reaction sequence:
$P$ $\xrightarrow{KMnO_4/KOH} Q$ $\xrightarrow{\text{soda lime}, \Delta} R$ $\xrightarrow{CH_3Cl, \text{anhydrous } AlCl_3} S$

In the below mentioned compounds,the decreasing order of reactivity towards electrophilic substitution is: