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Pick up the correct statement(s) :...

Pick up the correct statement(s) :

A

All minerals are ores

B

All minerals cannot be an ore

C

All ores are minerals

D

The minerals from which metals can be extracted profitably are called ores

Text Solution

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The correct Answer is:
B, C, D
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VK JAISWAL-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Which of the following reaction in the blast furnace is / are endother...

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  2. The funace lining in steel manufacture consists of :

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  3. Pick up the correct statement(s) :

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  4. Which of the following metal (s) is /are commercially extracted by sel...

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  5. Which of the following process makes the ore porous ?

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  6. Which of the following ores is / are oxide ore (s) ?

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  7. Roasting of copper pyrites is done :

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  8. Which of the following is a correct statement ?

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  9. In which of the following pairs, both the minerals are oxides ?

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  10. Which of the following mineral does not contain sodium ?

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  11. Which of the following pair consists of ore of the same metal ?

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  12. The process (es) by which lighter earthy particles are freed from the ...

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  13. Roasting is carried out to :

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  14. The chemical treatment of the ore for concentration is done in the cas...

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  15. Froth floatation :

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  16. Which of the following reaction(s) occurs during calcination?

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  17. Amphoteric nature of aluminium is employed in which of the following p...

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  18. Which of the following is true for calcination of a metal ore ?

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  19. The difference (s) between roasting and calcination is / are :

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  20. The etraction of metals from oxide ores involves

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