Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It,however,reacts with Grignard reagent and gives a positive iodoform test. The compound is:

Which reagent is used to distinguish between acetaldehyde and acetophenone?

Which one of the following will be most readily dehydrated in acidic condition?

$P \xrightarrow{H_2 / Pd-BaSO_4} Q \xrightarrow{(i) \text{ conc. } NaOH} R + S$. $R$ and $S$ form benzyl benzoate when treated with each other. Hence,$P$ is

Consider the following sequence of reactions. The incorrect statement about $R$ is: