Purification And Characterisation Of Organic Compounds Question 90
Question: A metal obtained directly by roasting of its sulphide ore is
[Pune CET 1998]
Options:
A) $ Cu $
B) $ Pb $
C) $ Hg $
D) $ Zn $
Show Answer
Answer:
Correct Answer: C
Solution:
When conc.
$ HgS $ ore is roasted $ HgS+O_2\xrightarrow{773-873K}Hg+SO_2 $ At this temperature, mercury vaporises and the vapours are condensed to the liquid metal.
Mercury so obtained is about 99.7% pure.
BETA
