alleryIron ore, coking coal and limestone are needed in the ratio of about:
A1:2:4
B3:3:1
C2:1:4
D4:2:1
Answer & Solution
Correct answer: D. 4:2:1
1. Iron and steel is a heavy industry because raw materials and goods are bulky.
2. Iron ore, coking coal and limestone are required in the ratio of approximately 4 to 2 to 1.
3. Some manganese is also needed to harden the steel.
_Source: syllabus Social Science, 'Contemporary India II', Ch 6 'Manufacturing Industries'_
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