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The number of statement/s which are the characteristics of physisorption is ___________.
A. It is highly specific in nature
B. Enthalpy of adsorption is high
C. It decreases with increase in temperature
D. It results into unimolecular layer
E. No activation energy is needed
Solution:
1930 Upvotes
Verified Answer
The correct answer is:
2
Physisorption is reversible in nature. It has low adsorption enthalpy nearly 20 to 40 kJ/mol. It results in a multimolecular layer. It decreases with increase in temperature. Activation energy is less or zero in physisorption.
C and E are correct. Hence, the correct answer is 2.
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