Question 1Air is a mixture of various gases. One of the gases constitu – InterviewSolution

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1.	Question 1Air is a mixture of various gases. One of the gases constitutes 21% part of the air and is essential for the survival of human beings. This gas is:(a) Nitrogen(b) Oxygen(c) Ozone(d) Argon
Answer» Question 1 Air is a mixture of various gases. One of the gases constitutes 21% part of the air and is essential for the survival of human beings. This gas is: (a) Nitrogen (b) Oxygen (c) Ozone (d) Argon

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