A.Nitrogen
B.Oxygen
C.Carbon
D.Hydrogen
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B.Oxygen
C.Carbon
D.Hydrogen
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Related Mcqs:
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- The chemical composition of coal is given by
- Chemical composition of rock does not change in:
- In a volume of air near the earth’s surface, _____________ occupies 78 percent and ____________ nearly 21 percent.
- The oxygen for fuel combustion comes from the air which consists of about
- In which type of the forest, humus is formed by the dry and dead leaves ?
- The most abundant gas in the stratosphere is __________?
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
- Which are the four most abundant elements in living cells ??
- Arrange the following in ascending order of their occurrence in the atmosphere: (1) oxygen (2) Nitrogen (3) Carbon dioxide (4) Argon
