The intermediate compound $X$ in the following chemical reaction is :

Identify product $A$ in the following reaction: $R-C \equiv N \xrightarrow[ii) H_{3}O^{+}]{i) DIBAl-H} A$

What is the major product of the following reaction? $CH_3-C \equiv N$ $\xrightarrow[Et_2O]{CH_3MgI}$ $\xrightarrow{H_3O^{+}}$

The reduction of benzoyl chloride with $Pd$ and $BaSO_4/CaCO_3$ produces :

What is $(P)$ in the reaction given below?
$(P)$ $\xrightarrow[\text{(ii) } H_3O^{+}]{\text{(i) } CH_3MgBr} (R)$ $\xrightarrow[\text{(ii) } \Delta]{\text{(i) dil. } NaOH} \text{4-methylpent-3-en-2-one}$

Identify the product '$B$' in the following reaction: $\text{Isopropyl cyanide} \xrightarrow{SnCl_2, HCl} A \xrightarrow{H_3O^+} B + NH_4Cl$