Given below are two statements :

Statement (I) : $\mathrm{SiO}_2$ and $\mathrm{GeO}_2$ are acidic while $\mathrm{SnO}$ and $\mathrm{PbO}$ are amphoteric in nature.

Statement (II) : Allotropic forms of carbon are due to property of catenation and $\mathrm{p} \pi-\mathrm{d} \pi$ bond formation.

In the light of the above statements, choose the most appropriate answer from the options given below :

The strongest reducing agent among the following is :

Given below are two statements:

Statement I : Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature.

Statement II : $$\mathrm{AlCl}_3$$ upon hydrolysis in acidified aqueous solution forms octahedral $$\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$$ ion.

In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements:

Statement I : $$\mathrm{S}_8$$ solid undergoes disproportionation reaction under alkaline conditions to form $$\mathrm{S}^{2-}$$ and $$\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$$.

Statement II : $$\mathrm{ClO}_4^{-}$$ can undergo disproportionation reaction under acidic condition.

In the light of the above statements, choose the most appropriate answer from the options given below :