Higher the value of $\mathrm{K}_{\mathrm{H}}$ at a given pressure, lower is the solubility of the gas in the liquid.
$\mathrm{K}_H$ value of gases (given) : $A>C>B$
$\therefore \quad$ Order of solubility of gases in water : $\mathrm{B}>\mathrm{C}>\mathrm{A}$
$\left(\mathrm{R}=0.083 \mathrm{~L}\right.$ bar mol-1 $\mathrm{K}^{-1}$ નો ઉપયોગ કરો)
$(M.wt.$ of $CuCl_2 =134.4 $ અને $K_b = 0.52\, , molal^{-1})$