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

In Wilfley table method to separate particles of gangue _______ method is used.

Advertisements
Advertisements

प्रश्न

In Wilfley table method to separate particles of gangue _______ method is used.

पर्याय

  • Magnetic

  • Froth floatation

  • Leaching

  • gravitation

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

In Wilfley table method to separate particles of gangue gravitation method is used.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Metallugy - Choose the correct option.

संबंधित प्रश्‍न

Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.

Give the effect of heat on their ?
oxides


Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.

Give the effect of heat on their: carbonates


Name:

(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen


Explain the following terms:

(a) flux


Explain the following terms:

smelting


An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.


Name the methods used for purification?


With a labelled diagram, explain the electro-refining of a particular metal.


`2Pb(NO3)_2`.........................


`HgS + O_2` ..................


Name a metal which forms a liquid alloy at ordinary temperature.


Explain with reason:

Why is powdered coke sprinkled on top of the electrolyte?


A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.


The following is a sketch of an electrolytic cell used in the extraction of aluminium :

(a) What is the substance of which the electrode A and B are made?
(b) At which electrode (A or B) is aluminium formed?
(c) What are the two aluminium compounds in the electrolyte C?
(d) Why is it necessary for electrode B to be continuously replaced?


Write the molecular formulae of the following compound.

Stannic oxide


Observe the figure and name and explain in brief the following method:


State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.


In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.


A process of extracting metals from aqueous solutions of their salts using suitable reducing agents is called ______


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×