Which of the following is $NOT$ a characteristic of interhalogen compounds?

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 hydrogen halide is most volatile?

$Br_2 + F_2$ (Excess) $\xrightarrow{\Delta} BrF_5$. When $F_2$ is diluted with $N_2$ gas,then the product of $Br$ would be:

Which of the following is a strong oxidizing agent used in the purification of water?

Chlorine is allowed to react with an excess of ammonia. In this reaction, $1$ mole of chlorine can oxidize '$Z$' moles of $NH_3$. The value of '$Z$' is: