IGCSE O Level Chemistry Exam MCQs – Practice Test 4 (Chapter 3)
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MCQ 16: Natrium is the Latin name for:
MCQ 17: The formula of copper carbonate is:
MCQ 18: The substance is treated both as a radical and an element. It is:
MCQ 19: All are the examples of radicals except:
MCQ 20: Valency of hydroxide ion (OH) is:
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