Question

What is the meaning of "vitiated air " ?

Answer 1

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Definition of vitiated air. Air that has been rendered impure by the breath of workers and horses, or by being mixed with the various gases given off in mines. It is frequently called return air.

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Answer 2

Answer:

Air containing a reduced percentage of oxygen.

Explanation:

when air is mixed with the various gases given off in mines or by workers, the oxygen concentration will reduce hence it is called vitiated air.