CBSE Class 12 Chemistry 2020 Delhi Set 1 Solved Paper

Question : 19 of 37

Marks: +1, -0

Assertion (A) : Elevation in boiling point is a colligative property.
Reason (R) : Elevation in boiling point is directly proportional to molarity.

Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is correct, but Reason (R) is wrong statement.
Assertion (A) is wrong, but Reason (R) is correct statement.

Solution:

(a)

\Δ{T}_b={K}_b \× {m}

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