मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Identify the Process Given in Following Passage and Draw Neat Labelled Diagram Showing the Process.

Advertisements
Advertisements

प्रश्न

Identify the process given in following passage and draw neat labelled diagram showing the process.
          Electrolysis of molten mixture of alumina (melting point > 20000C) is done in a steel tank. The tank has a graphite lining on the inner side. This lining does the work of a cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and fluorspar (CaF2) are added in the mixture to lower its melting point upto 10000C.

 

Advertisements

उत्तर

Electrolytic reduction of Alumina :

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2018-2019 (March) Balbharati Model Question Paper Set 2

संबंधित प्रश्‍न

Write the composition of the alloy called bronze.


Explain why, carbon cannot reduce oxides of sodium or magnesium.


 Name two metals which are always found in combined state.


Name three other metals which are extracted in a manner similar to sodium.


Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.


A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising


Metals X and Y can be recovered from the anode mud left behind after the electrolytic refining of copper metal. The coins made of metal X look new even after several years of use but the coins made of metal Y lose their shine gradually and get blackened soon. When metal X is alloyed with a small amount of metal Y, it becomes hard and hence suitable for making ornaments. What are metals X and Y? Also state the colour of metal X.


Aluminum is used in thermite welding:

write reaction for process?


Name the following:
Two metals which are found in the free or native state.


Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.


Which one of the following is not true of metal :
Metal will have 1 or 2 or 3 electrons in their valence shell.


Define calcination.


Zinc blende is converted to oxide by ______ process.


Write the molecular formulae of the following compound.

Fluorspar


In thermite welding a mixture of ____________ is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.


Which of the following metals exist in their native state in nature?

(i) Cu

(ii) Au

(iii) Zn

(iv) Ag


Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×