Which among the following reactions occurs by breaking of $$\mathrm{C}-\mathrm{O}$$ bond in alcohol?

Identify the product when phenol is heated with zinc dust.

Which of the following is secondary benzylic alcohol?

Identify the product $$\mathrm{A}$$ obtained in the following reaction.

Phenol + Conc. Nitric acid $$\stackrel{\text { conc, } \mathrm{H}_2 \mathrm{SO}_4}{\longrightarrow} \mathrm{A}$$