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Which of the following is not a suitable ore for extracting iron?

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in Chemistry – Class 12 by (188k points)
Which of the following is not a suitable ore for extracting iron?

(a) Hematite

(b) Magnetite

(c) Siderite

(d) Iron Pyrites

This question was posed to me in examination.

The doubt is from Occurrence of Metals topic in division General Principles and Processes of Isolation of Elements of Chemistry – Class 12

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Right choice is (d) Iron Pyrites

The best explanation: The composition of iron pyrite is FeS2. Iron pyrite is exothermic and can cause hazard in mines, it is more economical to extract iron from other ores such as magnetite and hematite. Pyrites are generally unstable and might turn into sulfurous minerals.

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