Question

Match the compounds/reactions in List I with their correct statements in List II. Matching can be one or more than one.

Answer 1

The reaction between benzene and excess methyl chloride (in presence of aluminum chloride) proves the existence of $\sigma$-complex in SE reaction.
The reaction $C_6{H}_6+\underset{\left(Purple\right)}{I_2}⟶Browncolouredcompound\underset{}{\overset{\Delta }{\to }}{C}_6{H}_6+I_2$
proves the existence of $\pi$-complex (charge transfer complex).
The reaction $C_6{H}_6\underset{}{\overset{Sulphonation}{\to }}{C}_6{H}_5{SO}_{3}H$<br><br>$C_6{D}_6\underset{}{\overset{Sulphonation}{\to }}{C}_6{D}_5{SO}_{3}H$ shows $1^o$ kinetic isotope effect. It also shows slightly $2^o$ kinetic isotope effect
The reaction $C_6{H}_6\underset{}{\overset{Nitration}{\to }}{C}_6{H}_5{NO}_2$<br><br>$C_6{H}_6\underset{}{\overset{Nitration}{\to }}{C}_6{D}_5-{NO}_2$ does not show $1^o$ kinetic effect. It shows slightly $2^o$ kinetic isotope effect.