Q.
In the commercial extraction of iron, roasting is adopted because
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a
It removes impurities of S, As, and Sb in the form of their elemental vapour
b
It prevents slag formation by Fe2O3
c
It prevents slag formation by FeO
d
Limonite is converted into its anhydrous form
answer is .
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Detailed Solution
During the process of roasting the metal cant be converted into its elemental form.
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