Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

describe the method used for refining of Germenium 
Asked by niharikapabba2605 | 07 Aug, 2018, 11:20: AM
answered-by-expert Expert Answer
  • Zone Refining: 
  1. This method is very useful for obtaining metals of high purity. e.g. Germanium, silicon, gallium, and boron etc.
  2. This method is based upon the principle that the impurities are more soluble in the molten state than in the solid state of the metal.
  3. In this method, an impure metal is converted into a bar which is heated at one end with a moving circular heater, so that it forms a molten zone.
  4. Due to the slow-moving heater along the length of the rod, the pure metal crystallizes out of the melt whereas the impurities pass into the adjacent molten zone.
  5. This process is repeated for the number of times till the impurities are completely removed.
  6. This process is usually carried out in an inert atmosphere to avoid oxidation of the metal.
  7. The metals obtained from this method are highly pure.
 
Answered by Ramandeep | 07 Aug, 2018, 12:06: PM
CBSE 12-science - Chemistry
Asked by yashrajgharte24.12dgatl | 14 Oct, 2021, 10:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by bindersaran3 | 04 Jun, 2020, 09:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by tribikramdash16 | 16 May, 2020, 06:51: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by jain.pradeep | 28 Feb, 2020, 11:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by jain.pradeep | 27 Feb, 2020, 02:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by jain.pradeep | 27 Feb, 2020, 02:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by jain.pradeep | 26 Feb, 2020, 09:58: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by sree1791983 | 23 Feb, 2020, 08:38: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by taruarora2605 | 26 Jan, 2020, 11:58: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Vidushi412 | 02 Mar, 2019, 02:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×