In what ratio are iron ore, coking coal and limestone required to make steel?
1 point
4:1:2
4:3:2
4:3:1
4:2:1
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3
OPTION D
Answer:
approximately 4:2:1
Iron ore, coking coal and limestone are required in the ratio of approximately 4:2:1. Some quantities of manganese, are also required to harden the steel Justify this statement.
Explanation:
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1
Answer:
Ans : 4th option 4:2:1
Explanation:
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