IGCSE A Level Chemistry Competitive Exam MCQs – Practice Test 5 (Chapter 22)
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MCQ 21: The lowest relative melting point among the four oxides is of:
MCQ 22: The element in Period 3 with the lowest electronegativity is:
MCQ 23: When phosphorus reacts with oxygen, it gives off clouds of:
MCQ 24: If heated Mg(s) is allowed to react with H2O(l), the product formed other than H2(g) will be:
MCQ 25: Among period 3 elements, an element which has a higher electronegativity than others is:
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