Metals are refined by using different methods. Which of the followi. metals are refined by electrolytic refining? S (11) Cuad on ot be (iii) Na (iv) K (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (ii) and (iv) • Thinking Process : DHI The process of purifying impure metal is called refining of metals. Ans. (a) Electrolytic refining is used for metals like Cu, Zn, Ag, Au etc. The method to be used for refining an impure metal depends on the nature of the i as well as on the nature of impurities present in it. So, metals Au (gold) and Cu (copper) are refined by electrolytic refining.

Four metals and their methods of refinement are giveni. Ni, Cu, Zr, Gaii. Electrolysis, van-Arkel process, Zone refining, Mond's processChoose the right method for each.A.Ni : Electrolysis, Cu : van-Arkel process, Zr : Zone refining, Ga : Mond's processB.Ni : Mond's process, Cu : Electrolysis, Zr : van-Arkel process, Ga : Zone refiningC.Ni : Mond's process, Cu : van-Arkel process, Zr : Zone refining, Ga : ElectrolysisD.Ni : Electrolysis, Cu : Zone refining, Zr : van-Arkel process, Ga : Mond's process

What is electrolytic refining?

During electrolytic refining of copper, it gets(a) Deposited on cathode (b) Deposited on anode(c) Deposited on cathode as well as anode (d) Remains in the solution

Which metal extraction process involves the use of heat and chemical reducing agents to obtain the metal from its ore?a. Electrolysisb. Pyrometallurgyc. Hydrometallurgyd. Aluminothermy

Metals less reactive than carbon can be extracted using...A:ElectrolysisB:Displacement with a more reactive metalC:No extraction needed they are found as native metalsD:Reduction with carbon