1.

Assertion (A) : Chemical adsorption is an exothermic process. Reason (R) : In chemical adsorption, gas molecules are held to the surface by formation of chemical bonds. Since strong bond is formed, nearly 400kJ/mole is given out as heat adsorption.

Answer»

Both A and R are CORRECT and R is the correct EXPLANATION of A.
Both A and R are correct but R is not correct explanation of A.
Both A and R are wrong.
A is correct but R is wrong.

Answer :A


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