A.20.84% of oxygen
B.0.04% of CO2
C.0.5% of water vapour
D.All of these
Related Mcqs:
- Water vapour is __________?
- The atmosphere of industrial area loaded with chimines is considered harmful to health because:
- BOD of a river water is found very high. This means water __________?
- In a petrol engine, the gas which does not burn and passes out without transformation is
- Dew point is
- When the air temperature is below freezing, the saturation vapour pressure over water is __________?
- The complete and perfect combustion of a hydrocarbon fuel yields
- BOD stands for __________?
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- Which of these statements are correct:
