Lead obtained form galena `(PbS)` by air reduction or carbon reduction process contains base metal `(Cu, Bi, Sn, As)` as impurities, due to the which lead becomes hard and brittle.
Cupellation is used for purification of

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. Parke's process is also called.

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. Parke's process is also called.

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. Ag can be obtained form purified Zn-Ag alloy by

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. Ag can be obtained form purified Zn-Ag alloy by

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. 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 lead as impurity. This impurity of Pb is removed by

Lead obtained form galena (PbS) by air reduction or carbon reduction process contains base metal (Cu, Bi, Sn, As) as impurities, due to the which lead becomes hard and brittle. 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 lead as impurity. This impurity of Pb is removed by

Lead obtained from galena ore (PbS) by air reduction or carbon reduction process contains base metal (cu, Bi, As, Sn,Zn) as impurities. The removal of the impurity of Ag from the commercial lead is called.

Lead obtained from galena ore (PbS) by air reduction or carbon reduction process contains base metal (cu, Bi, As, Sn,Zn) as impurities. The removal of the impurity of Ag from the commercial lead is called.

Lead obtained from galena ore (PbS) by air reduction or carbon reduction process contains base metal (cu, Bi, As, Sn,Zn) as impurities. Gelatin acts as addition agent in electrolysis of Pb . In the presence of gelatin, Pb becomes.

Lead obtained from galena ore (PbS) by air reduction or carbon reduction process contains base metal (cu, Bi, As, Sn,Zn) as impurities. Gelatin acts as addition agent in electrolysis of Pb . In the presence of gelatin, Pb becomes.