Which of the following is tertiary allylic alcohol?

Identify the solvent used in bromination of phenol to obtain 2,4,6-tribromophenol.

Identify the product obtained when isopropyl bromide is reacted with metallic sodium in dry ether.

An organic compound '$$\mathrm{A}$$' on reaction with $$\mathrm{PCl}_3$$ gives an alkyl chloride having formula $$\mathrm{C}_3 \mathrm{H}_7 \mathrm{Cl}$$. '$$\mathrm{A}$$' on oxidation with $$\mathrm{PCC}$$ forms an aldehyde having formula $$\mathrm{C}_3 \mathrm{H}_6 \mathrm{O}$$. Identify '$$\mathrm{A}$$'.