Give two requirements for vapour phase refining. - Chemistry

Give two requirements for vapour phase refining.

Short Note

(i) The metal should form a volatile compound with available reagent.

(ii) The volatile compound should be easily decomposable so that the recovery is easy.

shaalaa.com

Is there an error in this question or solution?

Chapter 6: General Principle and Processes of Isolation of Elements - Multiple Choice Questions (Type - I) [Page 83]

Chapter 6 General Principle and Processes of Isolation of Elements
Multiple Choice Questions (Type - I) | Q 43 | Page 83

Explain the principle of the method of electrolytic refining of metals. Give one example.

What happens when Copper matte is charged into silica lined converter and hot air blast is blown?

Name the method of refining which is Used to obtain semiconductor of high purity.

Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.

Match the items of Column I with the items of Column II and assign the correct code:

Column I	Column II
(A) Coloured bands	(1) Zone refining
(B) Impure metal to volatile complex	(2) Fractional distillation
(C) Purification of Ge and Si	(3) Mond Process
(D) Purification of mercury	(4) Chromatography
	(5) Liquation

Assertion: Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.

Reason: Copper is extracted by hydrometallurgy.

Describe a method for refining nickel.