Arrange the hydrohalic acids $(HX)$ of halogens in increasing order of acidity.

Which one of the following orders is not in accordance with the property stated against it?

Which of the following halogens has the highest bond energy?

Write two uses of $ClO_2$.

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:

Among the oxyacids of chlorine,the order of acidic character is