General Knowledge MCQs (College Level) From Textbook

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General Knowledge MCQs – Certification Test 248

Ozone Layer Depletion Quiz (Question 248) – Learning App & e-Book Download

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MCQ: 248

Chemical substance used in industry for cold cleaning, is known as

  1. methyl chloroform
  2. carbon tetrachloride
  3. halons
  4. hydrocarbons

Ozone Layer Depletion Study Material – General Knowledge App & eBook Quiz

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Ozone Layer Depletion Quiz App (iOS & Android)

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