Chapter 20: IGCSE A Level Chemistry Exam Tests
IGCSE A Level Chemistry MCQs - Chapter 20
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MCQ 76: Iron (Fe) metal in the form of steel (mixture of iron and carbon) can even be corroded by
MCQ 77: Plants become more susceptible to diseases and pests because
MCQ 78: The reaction vessel of ammonia (NH3) production is composed of
MCQ 79: Plants absorb nitrate ions essential for growth and make
MCQ 80: In the first stage in Contact process, sulfur (S8) is burned to form
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