Question

What is depression in freezing point

Answer 1

Freezing point depression is the decrease of freezing point of solvent of addition of a non volatilesolute

Answer 2

HEY MATE HERE IS YOUR ANSWER:-

The freezing point is the temperature at which the solid and the liquid state of a substance have Same vapour pressure.
Freezing-point depression is the decrease of the freezing point of a solvent on addition of a non-volatile solute. 

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