Assertion(A): Langmuir adsorption is a single-layer phenomenon.
Reason(R): It is due to van der Waals forces.

Options

A. If both (A) and (R) are correct, and (R) is the correct explanation of (A)
B. If both (A) and (R) are correct, but (R) is the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.

Answer

C

Explanation

The single layer fromed may be due to van der Waals adsorption or chemisorption.