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

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

Identify ether from the following compounds.

Ethers when dissolved in cold concentrated sulphuric acid forms

Identify the product '$$\mathrm{B}$$' in the following series of reactions.

$$\text { Propan - 1-ol } \xrightarrow[623 \mathrm{~K}]{\mathrm{Al}_2 \mathrm{O}_3} \mathrm{~A} \xrightarrow[\text { ii) } \mathrm{H}_2 \mathrm{O}]{\text { i) conc } \mathrm{H}_2 \mathrm{SO}_4} \mathrm{~B}$$