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Air Pollution MCQs App Download - Class 10 Chemistry Apps (iOS & Android)

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Air Pollution MCQs App Download & e-Book PDF - 605

MCQ: 605

Which of the following is not true about ozone?

  1. it is light blue in colour
  2. it has unpleasant odor
  3. it is harmful
  4. it is not a pollutant

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