How can $A$ and $B$ be differentiated?

Compound $(P)$ is formed by the acid-catalyzed rearrangement of $1$-methyl-$1$-cyclohexyl hydrogen peroxide. The reaction is shown below. Identify compound $(P)$.

The reduction of carbonyl compounds with aluminum isopropoxide in excess of isopropanol is known as the Meerwein-Ponndorf-Verley $(MPV)$ reduction. What is the final product when cyclohex$-2-$enone undergoes selective reduction using this method?

Benzaldehyde reacts with ammonia to form

Which of the following reactions is an example of Clemmensen reduction?

Which of the following is Clemmensen reduction?