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Standard IX
Geography
Manganese and Its Distribution in Karnataka
Manganese is ...
Question

Manganese is used in the manufacturing of steel to _____.

A
Increase its hardness
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B
Decrease its hardness
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C
Maintain its hardness
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D
None of these
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Solution

The correct option is A Increase its hardness
Manganese is used as an alloy in the manufacture of steel to increase its hardness. It is also used in the manufacture of chemicals, electrical industry, chemical fertilizers, calico printing and paints.

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