Refining or Purification of Impure Metals

Which of the following is/are correct chemical equations involved in Van-Arkel method:

Zirconium is refined by _____ method.(Van Arkel/Leaching)

Poling process involves:

Zone refining method is used for refining:

Nickel is refined by _____ process.(Monds/Van Arkel)

In the Mond's process, nickel carbonyl decomposes at _______

Name the method which is very useful for producing semiconductors.

In electrolytic refining, which metal is made anode?

State briefly the principle of refining by chromatography.

Write the principle of method used for the refining of germanium.

Write the principle of electrolytic refining.

Which methods are usually employed for purifying the Germanium metal ?

Which methods are usually employed for purifying the tin metal ?

A crude metal is heated with iodine to form metal tetraiodide which is decomposed on tungsten filament at $1800 \mathrm{K}$ to liberate pure metal. Give the name of this method.

${\mathrm{Zrl}}_4$ is converted to $\mathrm{Zr}$ by the _____.(Leaching process/Van-Arkel-de-Boer process)

Purification of $\mathrm{Ge}$ like semiconductor is done by

Which is true for Column Chromatography ?

Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is(are).