Question:
Which of the following is an example of physisorption?
Which of the following is an example of physisorption?
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Physisorption is non-specific, reversible, and occurs at low temperature; typical for inert gases and weak interactions.
Updated On: Apr 19, 2025
- Adsorption of \( \text{NH}_3 \) on charcoal
- Adsorption of \( \text{H}_2 \) on Ni
- Adsorption of noble gases on solid surface
- Adsorption of \( \text{O}_2 \) on heated metal
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The Correct Option is C
Solution and Explanation
- Physisorption involves weak van der Waals forces.
- Noble gases like He, Ne, Ar adsorb onto surfaces via physical forces, without forming chemical bonds.
- Others like \( \text{NH}_3 \) or \( \text{O}_2 \) may form chemical bonds — hence show chemisorption.
Answer: \( \boxed{\text{Adsorption of noble gases on solid surface}} \)
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