Assertion (A) When NaCl is added to water a depression in freezing point is observed.
Reason (R ) The lowering of vapour pressure of a solution causes depression in the freezing point.

Options

A. Assertion and reson both are correct statements and reson is sorrect explanation for assertion.
B. Assertion and reson both are correct statements but resons is not correct explanation for assertion.
C. Assertion and reason both are incorrect statements.
D. Assertion is wrong statement but reason is correct statement.

Answer

a

Explanation

Reason is the correct explanation for assertion.