Which of the following is an example of a solution in which the solute is a gas and the solvent is a solid?

Identify a pair of gases from the following that does not obey Henry's law.

Given the solubility curves of $KNO_3$ and $KCl$,which of the following statements is not true?

What type of solution is the $H_2$ gas in palladium?

The $K_H$ values (in $k\text{bar}$) of argon $(I)$,carbon dioxide $(II)$,formaldehyde $(III)$,and methane $(IV)$ are $40.3$,$1.67$,$1.83 \times 10^{-5}$,and $0.413$ respectively at $298 \ K$. The increasing order of solubility of these gases in liquid is:

$A$ gas '$X$' is dissolved in water at $2 \ bar$ pressure. Its mole fraction is $0.02$ in solution. The mole fraction of water when the pressure of gas is doubled at the same temperature is