Haloalkanes and Haloarenes

Given below are two statements:
Statement I: C?H?OH and AgCN both can generate nucleophile.
Statement II: KCN and AgCN both will generate nitrile nucleophile with all reaction conditions.
Choose the most appropriate option:

In a binary compound, atoms of element A form a hcp structure and those of element M occupy 2/3 of the tetrahedral voids of the hcp structure. The formula of the binary compound is:

Kindly go through the following questions

The above reaction requires which of the following reaction conditions?

In the following reaction sequence, [C] is:

The decreasing order of reactivity of the following organic molecules towards AgNO3 solution is:
(A) Cl
(B) Cl OMe
(C) CH3CHCH3 Cl
(D) CH3CHCH2NO2 Cl

A mixture of one mole each of ${\mathrm{H}}_2,\mathrm{H}\mathrm{e}$  and ${\mathrm{O}}_2$ each are enclosed in a cylinder of volume $V$  at temperature $T$ . If the partial pressure of ${\mathrm{H}}_2$  is $2\mathrm{a}\mathrm{t}\mathrm{m}$ , the total pressure of the gases in the cylinder is:

Identify [A], [B], and [C], respectively in the following reaction sequence :