The following transformation can be accomplished by:

$(i)$ Write structures of different isomeric amines corresponding to the molecular formula,$C_{4}H_{11}N$. $(ii)$ Write $IUPAC$ names of all the isomers. $(iii)$ What type of isomerism is exhibited by different pairs of amines?

The product $(B)$ is:

Which of the following compounds can form alcohol with $NaNO_2/HCl$?

The number of primary,secondary,and tertiary amines possible with the molecular formula $C_3H_9N$ is:

Consider the following sequence of reactions to produce major product $(A)$. Molar mass of product $(A)$ is $........... \ g \ mol^{-1}$. (Given molar mass in $g \ mol^{-1}$ of $C : 12, H : 1, O : 16, Br : 80, N : 14, P : 31$)