Question

Liquation method is used for the purification of which of the following metals?

• A. Tin
• B. Lead
• C. Bismuth
• D. All of these

Answer 1

Answer: (D)

All of these

Liquation is used for the refining of metals having low melting point and are associated with high melting impurities. For example, $Pb,Sn,Sb,Bi$ and $Hg$. The impure metal is heated on the sloping hearth of a furnace. The pure metal flows down leaving behind the non-fusible material on the hearth.