1.

Assertion. Langmuir adsorption is a single layer phenomenon. Reason. It is due to van der Walls forces.

Answer»

If both assertion and reason are ture, and reason is the trure EXPLANATION of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true, but reason is false.
If both assertion and reason false.

SOLUTION :Correct R. The single layer FORMED may be DUE to van der Waals adsorption or CHEMISORPTION.


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