What is the correct order of basic strength in substituted amines in an aqueous solution?

Which of the following compounds reacts with $CHCl_3$ and $KOH$ to produce an isocyanide?

Identify $X$ and $Y$ in the following reactions:

In the given reaction,$[X]$ will be:

$A$ reaction of $0.1 \ mol$ of Benzylamine with bromomethane gave $23 \ g$ of Benzyl trimethyl ammonium bromide. The number of moles of bromomethane consumed in this reaction are $n \times 10^{-1},$ when $n = \dots$ (Round off to the Nearest Integer).
(Given : Atomic masses: $C : 12.0 \ u, H : 1.0 \ u, N : 14.0 \ u, Br : 80.0 \ u$)

Which of the following substances will have the lowest boiling point?