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The rate of production of hydrogen gas from the reaction ...

The rate of production of hydrogen gas from the reaction between zinc granules and hydrochloric acid can be increased by

A.

cooling the reaction mixture

B.

using zinc powder instead of zinc granules

C.

using zinc rod instead of zinc granules

D.

carrying out the reaction at a higher pressure

E.

carrying out the reaction in a closed vessel

Correct answer is B

No explanation has been provided for this answer.