Which of the following statements is incorrect regarding amines?

$A$ primary amine can be converted to an alcohol by the action of

When primary amine is heated with $CS_2$ in presence of excess mercuric chloride,it gives isothiocyanate. This reaction is called

The given reaction is $2$-methylbutanamide reacting with $KOBr$ and $\Delta$. What is the correct statement about the product?

$CH_3NH_2 + CHCl_3 + 3KOH \rightarrow X + Y + 3H_2O$;
Compounds $X$ and $Y$ are:

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$: $\alpha$-halocarboxylic acid on reaction with dil. $NH_3$ gives good yield of $\alpha$-amino carboxylic acid whereas the yield of amines is very low when prepared from alkyl halides.
Reason $(R)$: Amino acids exist in zwitter ion form in aqueous medium.
In the light of the above statements,choose the correct answer from the options given below: