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:
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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