Poornima took two test tubes and labelled them as A and B In test tube A she puts a substance X with dilute hydrochloric acid and in test tube B she puts a substance Y with dilute hydrochloric acid reaction starts taking place in test tube B with evolution of gas. No such chemical reaction is observed in test tube A. Which gas is evolved in test tube B?
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Answer:
hydrogen gas (H²)
Explanation:
when metals react with acids it forms respective salt and liberates hydrogen gas
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