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प्रश्न
How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal?
लघु उत्तर
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उत्तर
- Bring a burning matchstick or a candle near the mouth of the test tube where the gas is escaping.
- The gas will burn with a characteristic ‘pop’ sound, which confirms the presence of hydrogen gas.
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