Question

The gas formed when Zn is treated with dil. HCl is

• A. \(CO_2\)
• B. \(Cl_2\)
• C. \(O_2\)
• D. \(H_2\)

Answer 1

The Correct Option is D

To solve the problem, we need to identify the gas evolved when zinc (Zn) reacts with dilute hydrochloric acid (HCl).

1. Chemical Reaction:
When zinc reacts with dilute hydrochloric acid, it displaces hydrogen from the acid and forms zinc chloride and hydrogen gas:

$ \text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2 \uparrow $

2. Gas Released:
From the reaction, the gas evolved is $ \text{H}_2 $ (hydrogen gas).

Final Answer:
The gas formed is $ \text{H}_2 $.