Identify compound $X$ in the following reaction.

How many amines with molecular formula $C_3H_9N$ can react with benzene sulphonyl chloride?

Identify the correct statements:
$(A)$ Primary amines do not give diazonium salts when treated with $NaNO_2$ in acidic conditions.
$(B)$ Aliphatic and aromatic primary amines on heating with $CHCl_3$ and ethanolic $KOH$ form carbylamines.
$(C)$ Secondary and tertiary amines also give the carbylamine test.
$(D)$ Benzenesulfonyl chloride is known as Hinsberg's reagent.
$(E)$ Tertiary amines react with benzenesulfonyl chloride very easily.
Choose the correct answer from the options given below:

Which of the following is the most basic substance?

The reaction of $N$-ethylcyclohexanamine with excess $CH_3I$ yields a product. Identify the product.

The major product formed in the following reaction is: