MHT CET · Chemistry · Surface Chemistry

Which of the following statements is true for adsorption?

A It is accompanied by evolution of heat.
B It is a bulk phenomenon.
C It is independent of surface area.
D It is independent of temperature.

Verified Solution

Answer & Solution

Correct Answer

(A) It is accompanied by evolution of heat.

Step-by-step Solution

Detailed explanation

- Adsorption is exothermic process.
- Adsorption is surface phenomenon.
- Adsorption depends on Temperature.
- It depends on the surface area. It increases with increase of surface area.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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