Question

how will you test a gas which is liberated when an acid reacts with an active metal #one word answer
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Answer 1

Answer:

When Hydrochloric acid reacts with an active metal (like zinc), we observe that gas filled bubbles are formed on the surface of the metal. ... Then, bring a burning candle near the gas filled soap bubble. If the gas present in bubble burns with a 'pop' sound, then its hydrogen gas.

I hope it will be helpful to you friend

Answer 2

Answer: Burning Splinter