What is the ratio of iron ore, coking coal and limestone in iron production?

2 :1: 4

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4 :2: 1

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1 :2: 4

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2 :4: 1

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Solution

The correct option is B 4 :2: 1
In iron production iron ore, coking coal and limestone are also used. They are required in the ratio of 4:2:1. In case of steel production, manganese is also used to harden the steel.

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