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Q.

Which of the following is chemisorption.

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a

Adsorption of H2 on Ni at high temperature

b

Adsorption of H2 on charcoal

c

Adsorption of moisture on silica gel

d

Dehydration by using anhydrous CaCl2

answer is A.

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Detailed Solution

Chemisorption is an adsorption process where the gas molecules or atoms are held to the solid surface by chemical bonds. Example: Adsorption of H2 on Ni at high temperature.

Hence, the correct answer is (A). 

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