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Q: What is the respective percentage of CO₂, N₂ and O₂ in the atmosphere?
  • A. CO₂ = 0.04%, N₂ = 78.08%, O₂ = 20.95%
  • B. CO₂ = 0.04%, N₂ = 20.95%, O₂ = 78.08%
  • C. CO₂ = 0.08%, N₂ = 70.08%, O₂ = 29.95%
  • D. CO₂ = 0.03%, N₂ = 68.08%, O₂= 30.95%
Correct Answer: Option A - The composition of the atmosphere is made up of different types of gases, such as water vapour and dust particles. The two major gases in the atmosphere are nitrogen (N₂ = 78.08%) and oxygen (O₂ = 20.95%). These two gases constitute about 99%. The remaining gases in the atmosphere include argon, carbon dioxide (CO₂= 0.04%), neon, helium, hydrogen etc.
A. The composition of the atmosphere is made up of different types of gases, such as water vapour and dust particles. The two major gases in the atmosphere are nitrogen (N₂ = 78.08%) and oxygen (O₂ = 20.95%). These two gases constitute about 99%. The remaining gases in the atmosphere include argon, carbon dioxide (CO₂= 0.04%), neon, helium, hydrogen etc.

Explanations:

The composition of the atmosphere is made up of different types of gases, such as water vapour and dust particles. The two major gases in the atmosphere are nitrogen (N₂ = 78.08%) and oxygen (O₂ = 20.95%). These two gases constitute about 99%. The remaining gases in the atmosphere include argon, carbon dioxide (CO₂= 0.04%), neon, helium, hydrogen etc.