1.

Name the metal that is purified by placing the impure metal on sloping hearth of a reverberatory furnace and heating that above its melting point in absence of air.A. MercuryB. GaliumC. ZirconiumD. Copper

Answer» Correct Answer - A
It is a liquation process.
Ex. Metals like Br, Sn, Pb and Hg are separated form their crude form by liquation.


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