Which of the following methods is not involved
in metallurgy of iron?
(a) Calcination
(b) Smelting
(c) Concentration of ore
(d) None of these
Answers
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Answer:
Calcination is the correct answer
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(d) None of these
Explanation:
Calcination is used in metallurgy for removal of H2O and CO₂. Calcination is process of heating of solids to a high temperature for the purpose of removing volatile substances, oxidizing a portion of mass, or rendering them friable. Calcination, therefore, is sometimes considered a process of purification.
Smelting and extraction of iron from the concentrated ore is also part of metallurgy of iron. So none of these will be the answer.
Option D is the answer
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