Identify the correct decreasing order of boiling point for hydrides of halogens.

Which of the following properties increases on going down from $F$ to $I$ in Group $17$ of the periodic table?

Which of the following represents the correct order of bond 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 attacks glass?

Industrially,bromine is obtained from $........$.