In upper layer of atmosphere ozone is formed by
A. The action of ultraviolet rays on oxygen
B. The combination of oxygen molecules
C. Subjecting oxygen to high pressure
D. The action of nitrogen on oxygen in atmosphere
Answer: Option A
Solution(By Examveda Team)
In upper layer of atmosphere ozone is formed by the action of ultraviolet rays on oxygen.Related Questions on Chemistry
Which of the following phenomenon is considered responsible for Global Warming?
A. Greenhouse effect
B. Fire in coal mines
C. Dry farming
D. Monsoon
E. Trade winds
The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
Join The Discussion