Question

A metal obtained directly by roasting of its sulphide ore is.

• A.
• B.
• C. $H g$
• D.

Answer 1

Answer: (C)

$H g$

Answer 2

When conc. $H g S$ ore is roasted

$\mathrm { HgS } + \mathrm { O } _ { 2 } \xrightarrow { 773 - 873 \mathrm {~K} } \mathrm { Hg } + \mathrm { SO } _ { 2 }$

At this temperature, mercury vaporises and the vapours are condensed to the liquid metal. Mercury so obtained is about 99.7% pure.