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The underlying of blast furnace is made ...

The underlying of blast furnace is made of

A

Graphite bricks

B

Silica bricks

C

Fire - clay bricks

D

Basic bricks

Text Solution

Verified by Experts

The correct Answer is:
D
In the blast furnace, limestone is added as one of the raw material, which decomposes to form basic CaO in the heat of the furnace. This would have no effect on a furnace lining like magnesium oxide which is itself basic
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