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JEE Main 202324 JanuaryEvening Shift
Exam
JEE Main
Year
2023
Date
24 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Surface Chemistry

JEE Main 2023 · 24 January · Evening Shift · Chemistry · Surface Chemistry

The number of statement/s which are the characteristics of...

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

Correct answer

0

Step-by-step solution

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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