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प्रश्न
Which of the following is an iron ore?
पर्याय
cinnabar
calamine
haematite
rock salt
MCQ
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उत्तर
Haematite
Explanation:
Haematite is the primary oxide mineral used to extract iron, and it primarily consists of iron (III) oxide (Fe2O3). The other options are incorrect because cinnabar is the primary ore for mercury, calamine is a common ore for zinc, and rock salt is a natural source of sodium.
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