Solutions: JEE Mains 2022 June 29 Shift 1

$1.2\ \text{mL}$ of acetic acid is dissolved in water to make $2.0\ \text{L}$ of solution. The depression in freezing point observed for this strength of acid is $0.0198^\circ\text{C}$. The percentage of dissociation of the acid is ______. (Nearest integer) [Given: Density of acetic acid is $1.02\ \text{g mL}^{-1}$; Molar mass of acetic acid is $60\ \text{g mol}^{-1}$; $K_f(\mathrm{H_2O})=1.85\ \text{K kg mol}^{-1}$]