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Question

In the upper layers of atmosphere, ozone is formed ?


A
By action of electric discharge on oxygen molecules
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B
By action of ultraviolet rays on oxygen molecules
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C
By action of infrared rays on oxygen molecules
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D
Due to sudden drop of pressure
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Solution

The correct option is B By action of ultraviolet rays on oxygen molecules
  • In the upper layer of atmosphere, the Ultraviolet rays (UV rays) split the molecule of oxygen $$(O_2)$$ into its constituent 2 atoms.
  • Each of the atom then combine with another oxygen $$(O_2)$$ molecule which gives rise to Ozone$$(O_3)$$.
  • Hence option B is correct answer.

Chemistry

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