Which gas is evolved when dilute hydrochloric acid reacts with zinc ? Write the molecular formula of the gas.

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Solution

Hydrogen gas is evolved. Its molecular formula is $H_{2}$ .

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Which gas is evolved when dilute hydrochloric acid reacts with zinc ? Write the molecular formula of the gas.

Hydrogen gas is evolved. Its molecular formula is H2.

Hydrogen gas is evolved. Its molecular formula is $H_{2}$ .