A 0.5 percent solution of potassium chloride was found to freeze at –0.24°C. If the percentage dissociation of potassium chloride is X then find value of :\frac{x}{10}: (Nearest integer) (Molal depression constant for water is $1.80 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ and molar mass of KCl is $74.6 \mathrm{~g} \mathrm{~mol}^{-1}$ )