Refining of Metals
Refining of Metals
Refining of Metals:
It is the process of purification of the metal obtained after reduction. Various methods for refining are employed but the most common is electrolytic refining.
1. By Liquation : This method is used for the easily fusible metal like tin etc. Impure metal is placed on the inclined bed of a furnace and heated.The metal melts and flow out leaving behind the impurities.
Eg: purification of Sn containing impurities of high melting point like Fe, Cu etc. Also used for purification of Pb, Bi etc.
2. By Distillation: Volatile metals like zinc and mercury etc. can be purified by the method. When these metals are heated their vapour are formed leaving behind the impurities. The vapours are condensed to get pure metals.
Which of the following are correct : (a) Distillation method is used for the easily fusible metal like tin etc. (b) In Electrolytic Refining, the metal is taken as anode and the cathode consists of pure metal. (c) If the impurities present in the metals can easily be oxidised, these are removed by oxidation method. | |||
| Right Option : B | |||
| View Explanation | |||
Volatile metals like ___________________ can be purified by the distillation method. | |||
| Right Option : D | |||
| View Explanation | |||
Metals are refind by using different methods. Which of the following metals are refined by electrolytic refining ? | |||
| Right Option : B | |||
| View Explanation | |||
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7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
