An aromatic compound 'X' having molecular formula ${\mathrm{C}}_7{\mathrm{H}}_8\mathrm{O}.$ It has 4 isomers (excluding X ). 'X' does not give ${\mathrm{H}}_2$ gas with $\mathrm{Na}$ metal

$\mathrm{Z}$ gives neutral ${\mathrm{FeCl}}_3$ test and on further mono-bromination on benzene ring it can form two products. Identify $\mathrm{X} \mathrm{and} \mathrm{Z}$.

Choose the reaction in each of the following pairs that proceeds at the faster rate. Explain your reasoning:

Base-promoted hydrolysis of phenyl acetate or $\mathrm{m}$-nitrophenyl acetate.

Choose the reaction in each of the following pairs that proceeds at the faster rate. Explain your reasoning:

Base-promoted hydrolysis of $\mathrm{m}$-nitrophenyl acetate or $\mathrm{p}$-nitrophenyl acetate.

Choose the reaction in each of the following pairs that proceeds at the faster rate. Explain your reasoning.

The reaction of ethyl bromide with phenol or with the sodium salt of phenol.

Choose the reaction in each of the following pairs that proceeds at a faster rate. Explain your reasoning.

Bromination of phenol or phenyl acetate.