Chapter 20: IGCSE A Level Chemistry Exam Tests
IGCSE A Level Chemistry MCQs - Chapter 20
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MCQ 16: The production of a large quantity of ammonia is done by increasing
MCQ 17: On a large scale, ammonia is produced at an industrial level through
MCQ 18: Nitrogen belongs to which group?
MCQ 19: Chemists have produced low sulfur version of petrol and diesel to reduce the emission of
MCQ 20: Which option is incorrect about a bloom of algae?
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