1.

(A): Adsorption is a surface phenomenon. (R) : During adsortion, residual force of surface decreases

Answer»

Both (A) and (R) are true and (R) is the CORRECT explanation of (A) 
Both (A) and (R) are true and (R) is not the correct explanation of (A) 
(A) is true but (R) is false 
(A) is false but (R) is true 

ANSWER :B


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