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Q.

Which is not raw material blast furnace extraction of iron?

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a

Coke

b

Haemetite

c

Sandstone

d

Limestone

answer is B.

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Detailed Solution

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The purpose of the blast furnace is to chemically reduce ore concentrate to a liquid metal state. 

A blast furnace is a huge steel shaft lined with refractory bricks into which concentrated iron ore, coke, and limestone are dumped from above and hot air is blown to the floor. 

Therefore sandstone is not a raw material from the extraction of iron.

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Which is not raw material blast furnace extraction of iron?