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State briefly the principles which serve...

State briefly the principles which serve as basis for the following operations in metallurgy :
(i) Froth floatation process
(ii) Zone refining
(iii) Refining by liquation

A

Specific gravity of the ore particles

B

Magnetic properties of the ore particles

C

Wetting properties of the ore particles

D

Electrical properties of the ore particles

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State briefly the principles which serve as the basis for the following operations in metallurgy? (i) Froth floatation process (ii) Zone refining (iii) Refining by liquation.

Describe the principle involved in each of the following processes of metallurgy : (i) Froth floatation method (ii) Electrolytic refining of metals (iii) Zone refining of metals

Which of the following is used as collector in froth floatation process ?

Which of the following is commonly used to produce form in froth floatation process ?

Which of the following is commonly used to produce foam in froth floatation process ?

Which of the following sulphide ore is not concentrated by froth-floatation process ?

Write the principle of the following (a) Zone refining (b) Froth flaotation process (c) Chromatography

Describe underlying principles of the following process: (i) forth floatation process of concentration of ores (ii) vapour phase refining of metals

Describe the principle of each of the following processes in detail : a) Mond's process (b) Zone refining (c) Electrolytic refining

Which of the following statements are true for froth floatation process (for a concentration of sulphide ores)?

AAKASH INSTITUTE ENGLISH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Objective type Questions (One option is correct)
  1. Vapour phase refining can be carried out in case of

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  2. Zone refining is based on the principle that .

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  3. Which of the following is not a method of purification of metals ?

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  4. Assertion: Zone refining method is used to produce pure metals which a...

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  5. Which of the following is not a use of aluminimum ?

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  6. Which of the following is not a use of zinc ?

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  7. Wrought iron is used for making

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  8. Which of the followed metals can be extracted by using carbon reductio...

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  9. Purest form of iron is

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  10. The metal oxide which cannot be reduced to metal by carbon is

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  11. On heating a mixture of Cu(2)O and Cu(2)S, we get

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  12. Which of the following pairs of metals is purified by van-Arkel method...

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  13. State briefly the principles which serve as basis for the following op...

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  14. In zone refining methods, the molten zone

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  15. Ag(2)S+NaCNto(A), (A)+Znto(B)+Ag (A) and (B) are respectively

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  16. Poling process is used

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  17. Which one of the following contains both iron and copper ?

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  18. Choose the false statement

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  19. In zone refining methods, the molten zone

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  20. The refractory material used in the lining of blast furnace is

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