Ore X of metal M undergoes ROASTING to form a roasted ore, which is then heated with X in the absence of O2 to give metal M. Ore Y of the same metal undergoes CALCINATION to form a calcined ore, which on heating with X in the absence of O2 also gives M. Which option correctly identifies X

Question

Ore X of metal M undergoes ROASTING to form a roasted ore, which is then heated with X in the absence of O2 to give metal M. Ore Y of the same metal undergoes CALCINATION to form a calcined ore, which on heating with X in the absence of O2 also gives M. Which option correctly identifies X and Y?

Accepted Answer

(A) and (B) both are correct. Auto-reduction is the standard route for extracting Cu and Pb from their sulphide/carbonate ores. Both option A (Cu system) and option B (Pb system) satisfy all conditions in the question, making D the correct answer.

Ore X of metal M undergoes ROASTING to form a roasted ore, which is then heated with X in the absence of O2 to give metal M. Ore Y of the same metal undergoes CALCINATION to form a calcined ore, which on heating with X in the absence of O2 also gives M. Which option correctly identifies X and Y?

Solution

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