IGCSE A Level Chemistry Certification MCQs – Practice Test 3 (Chapter 20)
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MCQ 11: Nitrogen gas prevents the chance of explosion in case of crude oil contact with the air because it is:
MCQ 12: In extreme weather, oxygen reacts with nitrogen to form:
MCQ 13: Sulfur compounds are present as impurities in:
MCQ 14: Acid rain falls in streams, rivers, lakes and makes them:
MCQ 15: Upon dissolving NO2(g) in water droplets, Nitric acid (HNO3) is formed. The acid falls in the form of acid rain causing:
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