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In the froth flotation process for benef...

In the froth flotation process for benefication of ore, the ore particles float because

A

they are light

B

their surface is not easily wetted by water

C

they bear electrostatic charge

D

they are insoluble

Text Solution

Verified by Experts

The correct Answer is:
B
Ore particles float because their surface is wetted by oil, i.e., not easily wetted by water.
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PRADEEP-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -COMPETITION FOCUS (JEE(Main and Advanced)/MEDICAL ENTRANCE SPECIAL) MULTIPLE CHOICE QUESTIONS (I)
  1. Sulphide ores are common for the metals

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  2. 'Metals are usually not found as nitrates in their ores''. Out of the ...

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  3. In the froth flotation process for benefication of ore, the ore partic...

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  4. The function of potassium ethyl xanthate in frotht floatatation proces...

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  5. NaCN is sometimes added in the froth flotation process as a depressant...

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  6. Which one of the following ores is best concentrated by froth floatati...

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  7. Sphalerite is concentrated by

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  8. Bauxite ore is made up of Al(2)O3 + SiO2 + TiO2 + Fe(2)O3 . This ore ...

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  9. In the leaching of Ag(2)S with NaCN, a stream air is also passed. It i...

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  10. The complex formed when Al(2)O(3) is leached from bauxite using concen...

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  11. Sulphide ores of metals are usually concentrated by both floatation pr...

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  12. In the equatio, 4M + 8 CN^(-) + 2 H2O + O2 to 4 [M(CN)2]^(-) ...

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  13. In the cyanide extraction process of silver from argentite ore, the ox...

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  14. Which one of the following reactions is an example for calcination pro...

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  15. When limestone is heated CO(2) gas is liberated. In metallurgy, this p...

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  16. Which of the following faction is of no significance for roasting sul...

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  17. Which of the following statements, about the advantage of roasting of ...

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  18. In view of the signs of Delta(r)G^(@) for the following reactions : ...

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  19. Delta G^(@) vs T plot in the Ellingham's diagram slopes downward fo...

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  20. According to Ellingham diagram the oxidation reaction of carbon and ca...

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