Question

Which one of the following statements is wrong about adsorption ?

• A. it is a selective and specific process
• B. it is a reversible process
• C. an increase in the gaseous adsorbate causes increase in adsorption. However, at high pressure, the adsorption becomes constant
• D. it is an endothermic process

Answer 1

The correct option is D it is an endothermic process

Both physical & chemical adsorptions are exothermic