Multiple choice questions: Oxygen combines with iron found in the rocks to form:
- AIron carbonate.
- BIron nitrites.
- ✓Iron oxides.
- DIron sulphate.
Answer: C.
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One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: C.
View full solution →Answer: B.
View full solution →Answer: D.
View full solution →Answer: C.
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