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O Level Chemistry Entry Tests: Certification Test 660

Chemical Symbols Quiz App & e-Book: MCQ 660

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MCQ: 660

If the valency of both Calcium and Sulphate ion is 2, the formula of calcium sulfate will be

  1. CaSO3
  2. CaSO4
  3. Ca2(SO4)2
  4. Ca2SO4

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Chemical Symbols Quiz App (iOS & Android)

Chemical Symbols Quiz App

O Level Chemistry Quiz App (Android & iOS)

O Level Chemistry Quiz App

10th Grade Chemistry Quiz App (Android & iOS)

10th Grade Chemistry Quiz App

9th Grade Chemistry Quiz App (Android & iOS)

9th Grade Chemistry Quiz App