ZIMSEC O-Level Combined Science
7.2.5.3Extracting iron and its alloys
Extracting iron and its alloys in ZIMSEC O-Level Combined Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic42 practice questions2 lessons
Overview
Forms 3 and 4.
Learning objectives
What the syllabus expects you to be able to do.
- 7.2.5.3.1List the raw materials for extracting iron and their sources.
- 7.2.5.3.2Describe the reactions in the blast furnace and how iron and slag separate.
- 7.2.5.3.3State the composition, properties and uses of alloys of iron (mild steel, stainless steel and cast iron).
Lessons
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Alloys and their properties
25 min
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Extracting metals and the blast furnace
30 min
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Sample question
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