Chapter 20: IGCSE A Level Chemistry Exam Tests
IGCSE A Level Chemistry MCQs - Chapter 20
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MCQ 66: The main catalyst which was used in Haber process was
MCQ 67: One of the most important manufactured chemical is
MCQ 68: Sulfuric acid (H2SO4) is used in
MCQ 69: Sulfur dioxide (SO2) is
MCQ 70: The optimum pH value for action of sulfur dioxide (SO2) resistance of microbe growth, is less than
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