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If you see a reaction in any test tube, bring a burning matchstick near the mouth of the test tube and see if you hear a pop sound.
Which of the following can be concluded based on this experiment?

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Some non-metals react with HCl releasing chlorine gas

Some metals react with HCl releasing hydrogen gas

Some non-metals react with HCl releasing hydrogen gas.

Some metals and non-metals undergo rusting on reacting with HCl

answer is B.

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Some metals react with HCl releasing hydrogen gas

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