The correct order of acidic character of the following is

In the following reactions (i) and (ii), the number of moles of chlorine gas released respectively are

(i) $$\mathrm{MnO}_2+4 \mathrm{HCl} \longrightarrow$$

(ii) $$\mathrm{KMnO}_4+16 \mathrm{HCl} \longrightarrow$$

What would be the product of following reaction?

$$\mathrm{SiCl}_4 \stackrel{\text { Excess of } \mathrm{H}_2 \mathrm{O}}{\longrightarrow} \text { ? (Major product) }$$

Identify (P) and (Q) in the following reaction.