MCQ
Which of the following statement about ozone is correct?
  • A
    It is essential for breathing.
  • B
    It absorbs ultraviolet rays.
  • C
    Its proportion in air is about $3\%.$
  • It is mainly responsible for global warming.

Answer

Correct option: D.
It is mainly responsible for global warming.
Ozone layer in the upper atmosphere prevents ultraviolet radiations of the sun from reaching the earth.

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