Dilute hydrochloric acid $(HCl)$ reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.

hydrogen

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oxygen

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chlorine

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nitrogen

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Solution

The correct option is A hydrogen
Acids react with metals to produce the respective metal salts along with hydrogen gas. The general form of the reaction is given below:

$Dil. acid (aq) + Metal (s) \to Salt (aq) + Hydrogen (g)$

For example:
When hydrochloric acid reacts with zinc, it produces zinc chloride along with the evolution of hydrogen gas.

The chemical reaction is given below:

$2 HCl (aq) + Zn (s) \to {ZnCl}_{2} (aq) + H_{2} (g)$

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Dilute hydrochloric acid $(HCl)$ reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.

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Dilute acids like hydrochloric acid (HCl), sulphuric acid $H_{2} S O_{4}$ react with certain active metals to evolve hydrogen gas and form their metallic salts.

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Dilute hydrochloric acid (HCl) reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.

Dilute hydrochloric acid $(HCl)$ reacts with metals to evolve _____ gas along with the formation of corresponding metal salt.