Zn-Ag alloy formed in the upper layer of molten lead is skimmed off from the surface of the molten lead by perforated ladles. This alloy contains leed as impurity, This impurity of Pb is removed by :

distillation process

No worries! We‘ve got your back. Try BYJU‘S free classes today!

cupellation

No worries! We‘ve got your back. Try BYJU‘S free classes today!

liquation

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Bett's electrolysis

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D liquation
Impurity of lead is removed by liquation.
Liquation is used for the refining of metals having low melting point and are associated with high melting impurities.
Ex. 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.

Suggest Corrections

Similar questions

(A + A g) + Z n ⟶ (A + A g + Z n) cooling - --- \to \frac{x - layer}{y - layer}

x

(A + A g) + Z n ⟶ (A + A g + Z n) cooling - --- \to \frac{x - layer}{y - layer}

In the extraction of silver, some lead is also present as an impurity in the final step. This lead can be removed by process, which is/are:

Join BYJU'S Learning Program