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Question

Joseph Priestly performed the famous bell jar eperiment to prove that

A
Plants consume oxygen
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B
Plants consume canbon dioxide
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C
Plants produce oxygen
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D
Plants produce carbon dioxide
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Solution

The correct option is C Plants produce oxygen
Joseph Priestly was the first person to show that plants produce oxygen. He demonstrated this by performing the classic bell jar experiments.
He demonstrated that when a candle was lit under a bell-jar, it would be put out in a while unless it is placed along with a green plant. Thus he showed that the green plants produced something that keeps the candle lit, which was later discovered to be oxygen.


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