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Class 10 Chemistry MCQs – Certification Test 190

Ozone Depletion MCQs (Question 190) – App & e-Book Download

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MCQ 190: Which of the following is true about ozone?

  1. light blue in colour
  2. odourless
  3. not harmful
  4. not a pollutant
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Class 10 Chemistry MCQs App & e-Book – Ozone Depletion Certification Guide

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