IGCSE O Level Chemistry MCQs – Practice Test 23 (Chapter 3)
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MCQ 111: Formula of Zinc Chloride (ZnCl2) indicates that charge on Zinc ion (Zn+2) is:
MCQ 112: Valency of iron (Fe) is:
MCQ 113: Consider Calcium Carbonate (CaCO3) and Hydrochloric Acid (HCl) as reactants, molecules of Hydrochloric Acid (HCl) required to balance the equation will be:
MCQ 114: State symbol indicate the:
MCQ 115: Butane (C4H10) molecular weight is:
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