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In the purification of impure Ni by Mong...

In the purification of impure Ni by Mong's process, metal is purified by

A

electrolytic reduction

B

Vapour phase thermal decomposition

C

Thermite reduction

D

Carbon reduction

Text Solution

Verified by Experts

The correct Answer is:
B
`underset(("Impure"))(Ni)+4CO overset(50^(@) " to " 60^(@)C) to underset("Volatile compound")([Ni(CO)_(4)] uarr) underset("Thermal decompotion")overset(200 " to " 230^(@)C) to underset("Pure")(Ni)+4COuarr`
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