alleryIn the metallurgy of iron, the charge of roasted ore, coke and limestone is taken in which ratio in the blast furnace?
A8 : 4 : 1
B4 : 8 : 1
C1 : 4 : 8
D2 : 1 : 1
Answer & Solution
Correct answer: A. 8 : 4 : 1
1. In the blast furnace the charge is fed through the hopper at the top.
2. It consists of roasted ore, coke and limestone.
3. These are taken in the ratio 8 : 4 : 1 respectively.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 8 Periodic Classification of Elements "Metallurgy of Iron", p.124_
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