Name the Method Used for the Refining of Zirconium.

Name the method used for the refining of zirconium.

The Van Arkel method is used for the refining of zirconium.

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2014-2015 (March) Panchkula Set 1

Q 15 | 3 marks

What is meant by the term “chromatography”?

Outline the principles of refining of metals by the following method:

Vapour phase refining

Write the chemical equations involved in van Arkel method for refining zirconium metal.

Outline the principles behind the refining of metals by the following methods:

Zone refining method

What happens when NaCN is added in an ore containing PbS and ZnS during concentration by froth floatation method?

Which method is used for refining Zr and Ti? Explain with equation.

Assertion: Zirconium can be purificed by Van Arkel method.

Reason: ZrI₄ is volatile and decomposes at 1800 K.

Describe a method for refining nickel.