IGCSE O Level Chemistry Exam MCQs – Practice Test 28 (Chapter 3)

Chemical Formulae and Equations Notes Questions with Answers PDF – Test 28

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Chemical Formulae & Equations Notes Q&A PDF Download – Practice Test 28

MCQ 136: Relative atomic mass of 3O₃ is:

MCQ 137: The formula of potassium sulfate is:

KSO₃
KSO₄
KHSO₃
K₂SO₄

MCQ 138: To balance Al(OH)₃ + HNO₃ → Al(NO₃)₃ + H₂O, number of HNO₃ molecules required will be:

MCQ 139: The chemical formula of butane is:

CH₄
C₂H₄
C₃H₈
C₄H₁₀

MCQ 140: The valency of Sulphide is:

+1
+2
-1
-2

Chemical Formulae & Equations Exam Prep – IGCSE O Level Chemistry Notes App & e-Book

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