During the depression of freezing point in a solution,which of the following are in equilibrium?

Which of the following has the lowest freezing point?

Which of the following will produce the maximum depression in freezing point of its aqueous solution?

$A$ camphor sample melts at $176^{\circ} C$. $K_f$ for camphor is $40 \ K \ kg \ mol^{-1}$. $A$ solution of $0.02 \ g$ of a hydrocarbon in $0.8 \ g$ of camphor melts at $156.77^{\circ} C$. The hydrocarbon is made up of $92.3 \%$ of carbon. What is the molecular formula of the hydrocarbon?

The cryoscopic constant of a liquid is the ratio of the depression of freezing point and the........

The freezing point of a diluted milk sample is found to be $-0.2\ ^\circ C$,while it should be $-0.5\ ^\circ C$ for pure milk. How much water has been added to pure milk to make the diluted sample?