Identify the reducing agent used for the following conversion:
$R-CHO \rightarrow R-CH_2-OH$

The minimum number of carbon atoms in ketones which will show chain isomerism is:

The product formed in the reaction is:

The product $B$ is formed by the reaction of cyclohexanone with hydroxylamine $(NH_2OH)$ to form an oxime $(A)$,followed by a Beckmann rearrangement using polyphosphoric acid $(PPA)$. Identify the product $B$.

The product $A$ in the above reaction is

In the above reaction,which of the following will be obtained in maximum yield?