An alkyl halide reacts with alcoholic ammonia in a sealed tube,the product formed will be

What are $X$ and $Y$ respectively in the following set of reactions?

The end product $(C)$ is

$A$ hydrocarbon $'A'$ $(C_4H_8)$ on reaction with $HCl$ gives a compound $'B'$ $(C_4H_9Cl)$,which on reaction with $1 \ mol$ of $NH_3$ gives compound $'C'$ $(C_4H_{11}N)$. On reacting with $NaNO_2$ and $HCl$ followed by treatment with water,compound $'C'$ yields an optically active alcohol,$'D'$. Ozonolysis of $'A'$ gives $2 \ mols$ of acetaldehyde. Identify compounds $'A'$ to $'D'$. Explain the reactions involved.

Identify the incorrect statements.

Which of the following species would not be involved in the Hoffmann rearrangement shown below?