1.

(A): Hydrogen gas always evolved only at cathode during electrolysis (R) : H^(+) ions undergo reduction by gaining electrons The correct answer is

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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

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