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GS Geography Physical Geography of World
Q.

Ozone layer is formed due to reactions of:
Explanation:

ANS. (A) 
Ozone in the Earth’s stratosphere is created by ultraviolet light striking ordinary oxygen molecules containing two oxygen two oxygen atoms (O), splitting them into individual oxygen atoms (atomic oxygen). The increase with change in altitude. However, pressure decreases continuously with increasing height due to the reduction of the mass of overlying air. As a general rule, a height change of 10 m equals a pressure change of about 1 MN. Pressure changes much more rapidly with height than with horizontal distance (Mountain Meteorology: Fundamentals and Applications by C. David Whiteman).

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