During extraction of metals, electrolytic refining is used to obtain pure metals.

(c) 1 : 1, is the correct option.

The balanced equation for the above reaction is  2 X + 5/2 O2 → X2O5 Now the mass of oxygen using law of conservation of mass = 3.6769 - 2.0769 Hence mass of Oxygen...

(c) either metals or non-metals 

(b) (i) and (iii) 

Au and Ag. They are not oxidized at anode. They are less electropositive than copper.

[Hint :(a) The impurities are more soluble in the melt than in the solid state of the metal. (b) Impure metal is made to act as anode, while the strip of...

(a) Distillation, (b) Liquation, (c) Electrolytic rening, (d) Zone rening, (e) Mond process, (f) Van Arkel process]

In electrolytic refining of copper, the common elements present in anode mud are selenium, tellurium, silver, gold, platinum, and antimony. These elements are very less reactive and are not affected...

(c) : In the electrolytic refining of copper the more electropositive impurities like Fe, Zn, Ni, Co, etc. dissolve in the solution and less electropositive impurities such as Ag, Au...

The correct answer is (B, C, D) Impure Cu is used as anode pure Cu deposited at cathode. Electrolyte is acidified solution of CuSO4. impurities settle as anode mud.