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Ozone Layer Depletion App MCQ Download & e-Book - 248

MCQ:

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

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

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Ozone Layer Depletion App (Android & iOS)

Ozone Layer Depletion App (Android & iOS)

General Knowledge App (Android & iOS)

General Knowledge App (iOS & Android)

Biochemistry App (Android & iOS)

Biochemistry App (Android & iOS)

Educational Psychology App (Android & iOS)

Educational Psychology App (iOS & Android)