Name the Method of Refining Which is Used to Obtain Semiconductor of High Purity.

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

One Word/Term Answer

Zone refining

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2018-2019 (March) 56/1/1

Q 17.1.1 | 1 mark

Zone refining is based on the principle that ______.

Electrolytic refining is used to purify which of the following metals?

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.

Explain the following:

Vapour phase refining method is used for the purification of Ti.

Refining using liquation method is the most suitable for metals with ______.

Describe a method for refining nickel.