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Petroleum MCQs App Download & e-Book - 99

MCQ:

Number of carbon atoms per molecule in lubricating oil is

  1. 14 to 20
  2. 20 to 50
  3. 50 to 70
  4. more than 70

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Petroleum App (Android & iOS)

Petroleum App (Android & iOS)

10th Grade Chemistry App (Android & iOS)

10th Grade Chemistry App (iOS & Android)

College Chemistry App (Android & iOS)

College Chemistry App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (iOS & Android)