Question

When sodium carbonate is added to a test tube which contains dilute hydrochloric acid, a gas is evolved. The gas evolved is:

hydrogen and it turns lime water milky

CO₂ and it smells like burning Sulphur

CO₂ and it turns lime water milky

hydrogen and it burns with a pop sound.

Answer 1

It’s option (3) carbon dioxide and it turns milky in lime water.
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