What different elements are found in baryte?

Identify the product '$$B$$' in the following reaction.

Cumene $$\mathrm{\mathrel{\mathop{\kern0pt\longrightarrow} \limits_\Delta ^{KMn{O_4}\,.\,KOH}}}$$ A $$\mathrm{\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{}^{{H_3}{O^ + }}}}$$ B

Which of the following on reaction with ammoniacal silver nitrate forms silver precipitate?

Identify an aromatic, mixed, 3$$^\circ$$ amine from following.