IGCSE A Level Chemistry Certification MCQs – Practice Test 19 (Chapter 13)
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MCQ 91: Each halogen atom tends to gain 1e- when it reacts with:
MCQ 92: Fluorine (Fl2) can be stored in containers of:
MCQ 93: Decoy magnesium flares give off heat confuses the infrared detection system in missiles so the enemy can not:
MCQ 94: When a Group II nitrate is heated, toxic NO2 can be seen as:
MCQ 95: The lowest melting point among these elements is of:
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