1.

Assertion(A):Powdered calcium carbonate reacts more quickly with hydrochloric acid than marble chips. Reason(R ):Powdered calcium carbonate offers large offers large surface area than marble chips .Because greater the surface area,the greater is the rate of the reaction.

Answer»

Both (A)and ( R) CORRECT
(A) is correct but (R ) is WRONG
Both (A) and (R ) are wrong
(A) is wrong but (R ) is correct

Answer :B


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