Consider the sequence of reaction

${\mathrm{Na}}_2{\mathrm{SO}}_3+\text{ Sulphur }\to \text{ Compound }\left(\mathrm{P}\right)$

$\mathrm{P}+{\mathrm{Cl}}_2+{\mathrm{H}}_2\mathrm{O}\to \mathrm{Q}+\mathrm{R}$

Q is sulphur containing compound

Select the correct statement(s).

P can dissolve the precipitate of AgBr

P on reaction with I₂ forms a sulphur containing compound in which average oxidation number of sulphur is +2.5

Oxidation number of sulphur in ‘Q’ is +6

P can dissolve precipitate of Agl