Identify the product B in following reaction.
$\text{CH}_3\text{Br} \xrightarrow{\large{\text{KCN}}} \text{A} \xrightarrow[\large{\text{C}_2\text{H}_5\text{OH}}]{\large{\text{Na}}} \text{B}$

What is the product formed on Rosenmund reduction of benzoyl chloride ?

Identify the reagent used in following reaction.
$\text{Benzoic acid} \xrightarrow[\Delta]{\large{\text{Reagent}}} \text{Benzoyl chloride} + \text{phosphorous oxychloride} + \text{Hydrogen chloride}$

Which from following reactions occurs by removal of -CO- group from amide ?