Q. From haematite, impurities like silicate and silica are removed by

A
Reduced in blast furnace
B
Heated in a Current of air
C
Washed in running water
D
None of these
Solution:

? The haematite is heated in a current of air, while heating the impurities like sulphur, arsenic, moisture etc gets removed.

? The haematite thus obtained is then reduced in a blast furnace

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