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A metal obtained directly by roasting of its sulphide ore isA. `Cu`B. `Pb`C. `Hg`D. `Zn` |
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Answer» Correct Answer - C When conc. `HgS` ore is roasted `HgS+O_(2) overset(773-873K)rarrHg+SO_(2)` At this temperature, mercury vaporises and the vapours are condensed to the liquid metal. Marcury so obtained is about `99.7%` pure. |
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