Methyl ketone group is identified by

An optically active alkyl halide $C_4H_9Br$ $[A]$ reacts with hot $KOH$ dissolved in ethanol and forms alkene $[B]$ as the major product,which reacts with bromine to give dibromide $[C].$ The compound $[C]$ is converted into a gas $[D]$ upon reacting with alcoholic $NaNH_2.$ During hydration,$18 \ g$ of water is added to $1 \ mole$ of gas $[D]$ on warming with mercuric sulphate and dilute acid at $333 \ K$ to form compound $[E].$ The $IUPAC$ name of compound $[E]$ is $:$

In the given reaction $X + Y \xrightarrow[5^\circ C]{NaOH} CH_3-CH(OH)-CH(CH_3)-CHO$,$(X)$ and $(Y)$ will respectively be:

Which of the following compounds will undergo self-aldol condensation in the presence of cold dilute alkali?

The given reaction is: $R_2C=O + HCN \rightarrow R_2C(OH)CN$

The major product $Q$ of the following reaction scheme is: