_____________ gas is normally employed in B.E.T. method of finding out the surface area of catalyst?
Correct answer: D. N2
- A. He
- B. H2
- C. CO2
- D. N2
Explanation
Nitrogen adsorption is conventionally used in the BET method because N₂ has suitable size, readily forms a measurable monolayer at liquid-nitrogen temperature, and is relatively inert toward most catalyst surfaces.
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