Identify the product ' B ' in the following sequence of reactions.

$$\mathrm{CH}_3 \mathrm{MgBr} \xrightarrow{\mathrm{CdCl}_2} \mathrm{~A} \xrightarrow{\mathrm{CH}_3 \mathrm{COCl}_1} \mathrm{~B}$$

Identify the compound '$$\mathrm{A}$$' in the following sequence of reactions.

$$\text { A } \xrightarrow[\text { Dryether }]{\mathrm{C}_2 \mathrm{H}_3 \mathrm{MgBr}} \mathrm{B} \xrightarrow{\mathrm{H}_3 \mathrm{O}^{+}} \text {3-Methylpentan-3-0l }$$

Which of the following is Clemmensen reduction?

Identify substrate 'A' in the following reaction.

2nA $$\mathrm{\buildrel {Dimethyl\,cadmium} \over \longrightarrow}$$ 2n Propanone + n Cadmium chloride