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Q.

Quantity of fresh air required for a man is

[A] 1000 cubic feet of air for every 20 minutes
[B] 1000 cubic feet of air for every 20 seconds
[C] 1000 cubic feet of air for every 10 minutes
[D] 1000 cubic feet of air for every 10 seconds
Answer & Explanation
Option: [A]

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