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If the ore particles and the impurities ...

If the ore particles and the impurities are different in one of the properties of colour, size than the process of separation is called

A

Washing

B

Leaching

C

Floatation

D

Hand picking

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BEYOND PUBLICATION-PRINCIPLES OF METALLURGY-EXERCISE
  1. In the word chalcogen, 'chalco' means

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  2. Least active metal among the following.

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  3. If the ore particles and the impurities are different in one of the pr...

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  4. The correct observation made by the student after putting clean pieces...

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  5. Which of the following metals can replace copper from a solution of co...

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  6. Which one of the following elements occur in free state

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  7. The reactivity of metals Al, Ag and Cu increase in the order of

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  8. The second most abundant metal in the earth's crust is

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  9. The process of coating Zn over Fe is known is

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  10. Identify an ore containing sulphur in it.

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  11. Which of the following is an amphoteric oxide ?

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  12. Which is not a sulphide ore of metal ?

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  13. Which of the following alloys does not contain copper

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  14. Which of the following is the least abundant metal in earth's crust ?

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  15. A mineral is called ore if…….

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  16. Concentration by forth floatation is applicable for which of the follo...

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  17. Specific gravity of slag is always :

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  18. Polling process is employed for the removal of

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  19. Highly electropositive metals can not he extracted by carbon reduction...

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  20. Tamishing of silver is due to the presence of this gas in air……..

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