Question

If X is a reactive metal, then gas will be evolved when X reacts with dil. sulphuric acid, the gas is :

• A. $H_2$
• B. $S{O}_2$
• C. $H_{2}S$
• D. $O_2$

Answer 1

Answer: (A)

$H_2$

Metals react with acids to give salt and hydrogen gas. Since $X$ is said to be a reactive metal, therefore, it will also give a salt and hydrogen gas upon reaction with an acid. Thus, the gas that evolved would be hydrogen gas.

$Metal+Dil.Acid\to Salt+Hydrogen$