धातु की क्रिया अम्ल से करवाने पर सामान्यत: कौन से गैस निकलती है

Options

A. नाइट्रोजन
B. हाइड्रोजन
C. आक्सीजन
D. क्लोरीन

Answer

**Step-by-Step Solution:**

1. **Understanding the Reaction**: When a metal (धातु) reacts with an acid (अम्ल), a chemical reaction occurs. This reaction typically produces a salt and hydrogen gas.

2. **Identifying the Gas**: In the context of the question, we need to identify which gas is released during the reaction. The common gas released when metals react with acids is hydrogen gas (H₂).

3. **Example Reaction**: For instance, if we take zinc (Zn) as the metal and hydrochloric acid (HCl) as the acid, the reaction can be represented as:
\[ \text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2 \]
Here, zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas.

4. **Testing for Hydrogen Gas**: To confirm the presence of hydrogen gas, we can perform a simple test. When a burning splint is brought near the gas, it produces a 'pop' sound, indicating that hydrogen is present.

5. **Conclusion**: Therefore, the gas that is generally released when a metal reacts with an acid is hydrogen gas (H₂).

**Final Answer**: Hydrogen gas (H₂) is released when a metal reacts with an acid.

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