A metal obtained directly by roasting of its sulphide ore is
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a
Cu
b
Pb
c
Hg
d
Zn
answer is C.
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Detailed Solution
When conc. HgS ore is roasted HgS+O2→773−873KHg+SO2At this temperature, mercury vaporises and the vapours are condensed to the liquid metal. Mercury so obtained is about 99.7% pure.