IGCSE A Level Chemistry MCQs – Practice Test 8 (Chapter 20)
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MCQ 36: To reduce pollutants from motor vehicles car exhaust systems are fitted with:
MCQ 37: The main cause of Acid Rain is:
MCQ 38: Ammonium compounds constitute very importantly:
MCQ 39: Ammonia is very important:
MCQ 40: Sulfur dioxide is added to foods to stop:
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