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Question

Calcium silicate slag formed in extraction of iron :

A
prevents the reoxidation of molten iron.
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B
catalyses the combustion of carbon
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C
reduces CO2 to CO at the bottom of the furnace
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D
is used in cement industry
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Solution

The correct options are
C prevents the reoxidation of molten iron.
D is used in cement industry
Slag formed in extraction of iron is consists of CaSiO3 which is further used for making cement.
Also, formation of this slag prevents the re-oxidation of molten iron.

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