Which of the following halogens has the maximum bond dissociation energy?

An inorganic white crystalline compound $(A)$ has a rock salt structure. $(A)$ on reaction with conc. $H_2SO_4$ and $MnO_2$ evolves a pungent smelling,greenish-yellow gas $(B)$. Compound $(A)$ gives a white precipitate of $(C)$ with $AgNO_3$ solution. Compounds $(A)$,$(B)$,and $(C)$ will be respectively:

Which of the following species represent a mixed anhydride?

What are the products formed when chlorine is passed through an aqueous hypo solution?

Chlorine gas is dried over

Which one of the following halogens liberates oxygen when passed through hot concentrated $KOH$ solution?