A.Helium
B.Hydrogen
C.Oxygen
D.Nitrogen
Related Mcqs:
- The most abundant gases in the earth’s atmosphere by volume are ____________.
- In a volume of air near the earth’s surface, _____________ occupies 78 percent and ____________ nearly 21 percent.
- The two major consitituents of the sun are
- Most of gases exhibit drop in temperature upon expansion. However, this may not be true in case of
- Which of the following gases is not found free in air?
- The earth’s first atmosphere was composed primarily of ______________.
- Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
- Which of the following gases is most predominant in the sun?
- Stanley Miller in his classical experiment on formation of amino acids passed an electric discharge in the mixture of:
- Which are the four most abundant elements in living cells ??
