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Question
Ozone gas is continuously formed in the stratosphere by ______.
Options
Action of UV rays on nascent oxygen
Reaction of oxygen with water vapour
Action of UV rays on molecular oxygen
Action of UV rays on water vapour
MCQ
Fill in the Blanks
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Solution
Ozone gas is continuously formed in the stratosphere by action of UV rays on molecular oxygen.
Explanation:
Ultraviolet (UV) radiation in the stratosphere breaks down molecular oxygen (O2) into atomic oxygen (O). Ozone (O3) is created when the atomic oxygen joins forces with another O2 molecule. Thus, when UV photons interact with molecular oxygen, ozone is created.
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