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Chemistry

Grade-8

Easy

Question

In the laboratory preparation of carbon dioxide, the gas is collected by upward displacement of air because:

CO₂ is lighter than air
CO₂ has the same density as air
CO₂ is heavier than air
None of these

hint Hint:

CO₂ is heavier than air.

The correct answer is: CO₂ is heavier than air

Hydrochloric acid added to calcium carbonate produces carbon dioxide.
In the laboratory preparation of carbon dioxide, the gas is collected by upward displacement of air because CO₂ is heavier than air.

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