Which of the following gas composition is wrong?
A. 78% nitrogen
B. 21% oxygen
C. 0.03 - 0.05% CO2, argon
D. None of the above
Answer: Option D
Related Questions on Environmental Chemistry
The term 'brown air' is used for
A. Acid fumes
B. Photochemical smog
C. Sulphurous smog
D. Industrial smog

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