1.

Assertion(A): During the reaction of calcium carbonate with dilute with dilute hydrochloric acid,brisk effervscence takes place. Reason (R ):Brisk effervescence is due to the evolution of carbondioxide gas

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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