Correct Answer - Option 4 : Bauxite
The correct answer is Bauxite.
The description is as follows:
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Option
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Description
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1.
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Haematite
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It is iron ore.
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2.
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Magnetite
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It is iron ore.
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3.
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Limonite
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It is iron ore.
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4.
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Bauxite
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It is an ore of aluminium and it is a sedimentary rock.
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Hence, ‘Bauxite’ is the odd one out.
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Haematite
- It has 60-70 per cent metallic content.
- It is Reddish and of the best quality.
- It is found in Dharwad and Cuddapah rock systems of peninsular India.
- 80 per cent of haematite reserves are in Odisha, Jharkhand, Chhattisgarh, and Andhra Pradesh.
- In the western section, Karnataka, Maharashtra, and Goa have this kind of ore.
- Hematite ore is the most important industrial iron ore in terms of the quantity used.
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Magnetite
- It is the finest iron ore with a very high content of iron up to 70 per cent.
- It has excellent magnetic qualities, especially valuable in the electrical industry.
- It is found in Dharwad and Cuddapah systems.
- Found in Karnataka, Andhra Pradesh, Rajasthan, Tamil Nadu and Kerala.
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Limonite
- Inferior ore, yellowish, 40 to 60 per cent iron metal.
- Damuda series in Raniganj coalfield, Garhwal in Uttarakhand, Mirzapur in Uttar Pradesh, and Kangra valley of Himachal Pradesh.
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Bauxite
- It is an ore of aluminium.
- It is a light and versatile material, having wide industrial uses such as in the aeroplane industry, machine tools, electricals and utensil industry.
- It is mostly mined in tropical regions but aluminium is manufactured in developed countries where cheap electricity is abundantly available.
