Question

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

• A. oxygen
• B. hydrogen
• C. nitrogen
• D. chlorine

Answer 1

The correct option is B hydrogen

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

$\text{Acid}+\text{Metal}\to \text{Metal salt}+\text{Hydrogen gas}$

For example: When hydrochloric acid reacts with zinc, a salt of zinc chloride is produced along with the evolution of hydrogen gas. This can be represented as:

$\text{Zinc}+\text{Hydrochloric acid}\to \text{Zinc chloride}+\text{Hydrogen gas}$