Question

A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution ? Why ?

Lakhmir Singh Chemistry Class 10

Answer 1

Answer:

A) The metal is Mercury.

_... Symbol is (Hg)

B) Formula of its sulphide ore = (HgS)

C) HgS + O2 → Hg + SO2

D) It is usually used in thermometers to determine the temperature.

E) Mercury cannot displace copper from its copper sulphate solution as mercury is less reactive than copper.

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Answer 2

Answer:

A) The metal is Mercury.

——Symbol is (Hg)

B) Formula of its sulphide ore = (HgS)

C) HgS + O2 → Hg + SO2

D) It is usually used in thermometers to determine the temperature.

E) Mercury cannot displace copper from its copper sulphate solution as mercury is less reactive than copper.

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