Which of the following magnetic ore was once used as a primitive compass?

Lodestone

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Hematite

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magnetite

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None of these

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Solution

The correct option is C
magnetite

Magnetite(soft iron) is one of the main iron ores, with the chemical formula $F e_{3} O_{4}$ . It is used to make artificial magnets. It is one of the oxides of iron. It is attracted to a magnet and can be magnetized to become a permanent magnet itself. It was once used as a primitive compass.

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Q26. Consider the following statements related to Iron ore Distribution in India.

1. Karnataka has more than half of the reserves of magnetite ore in India.

2. Chhatisgarh has the highest reserves of hematite ore in India.

3. Hematite and magnetite are the two most important iron ores found in India.

Which of the above statement(s) is/are NOT correct?

78. Consider the following statements related to Iron Ore Distribution in India

i) Hematite and magnetite are the two most important iron ores in India

ii) Karnataka has more than half of the reserves of magnetite ore in India.

Select the correct answer using the code given below:

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