Question

Which of the following metals can be refined by pyro refining process?

• A. Copper
• B. Tin
• C. Aluminium
• D. Mercury

Answer 1

Answer: (B), (D)

The correct options are
B

Tin

D

Mercury

In the pyro refining process, heat is used to purify metal.

In the given options:

Mercury is volatile in nature, on heating, mercury vaporizes and impurities are left behind. So, it can be purified by pyro refining.

Aluminium and copper are purified by electrorefining process.

Tin has a low melting point and hence it is liquefied and can be separated, while non-volatile impurities are left behind. So, tin can also be purified by pyro refining.