In a solution with molality $m$,if the solute exists as a trimer,what would be the depression in the freezing point of the solution?

Assertion : Molecular mass of benzoic acid when determined by colligative properties is found high.
Reason : Dimerisation of benzoic acid.

The Van't Hoff factor of $BaCl_2$ at a concentration of $0.01 \ M$ is $1.98$. The percentage dissociation of $BaCl_2$ at this concentration will be: (in $\%$)

The Van't Hoff factor $i$ for a $0.2 \ m$ aqueous solution of urea is

When $1.5 \ g$ of phenol $(C_6H_5OH)$ is dissolved in $100 \ g$ of toluene,a decrease in freezing point of $0.56 \ K$ is observed. If the association is dimeric in nature,find the percentage of association. Given: $K_f = 4 \ K \ kg \ mol^{-1}$.

The molecular weight of benzoic acid in benzene as determined by the depression in freezing point method corresponds to: