IGCSE O Level Chemistry Certification MCQs – Practice Test 3 (Chapter 3)
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Download "Chemical Formulae and Equations Quiz" App (Android & iOS): Variable valencies are used to indicate ions; MCQ with answers: greater than −1, greater than +1, and with more than one valency. Learn Chemical to Electrical Energy Quiz Questions, download Google Book (Free Chapter) for chemistry virtual communities.
MCQ 11: Variable valencies are used to indicate ions:
MCQ 12: In CuO (Copper Oxide), the valency of Copper is:
MCQ 13: In order to get Sodium Sulfite (Na2SO3) as product, the reactants shall be Sulfur Dioxide (SO2) and:
MCQ 14: Relative molecular mass of Na2CO3 is:
MCQ 15: Formula of Ammonium Sulfate ((NH4)2SO4) is:
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