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Copper is refined by...

Copper is refined by

A

liquation

B

cupellation

C

bassemerisation

D

polling

Text Solution

Verified by Experts

The correct Answer is:
D
Molten impure metal is stirred with green wood poles. Wood liberates `CH_(4)` which reduces any oxide present to metal.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 19-Paper 1 (Physics & Chemistry)
  1. What is the equivalent weight of "SnCl"(2) in the following reaction ?...

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  2. What type of crystal defect is indicated in the diagram given below : ...

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  3. Copper is refined by

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  4. Dinitrogen pentoxide (N(2)O(5)), a colourless solid is prepared by

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  5. The shape of "XeOF"(2) on the basis of VSEPR theory is

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  6. All alkyl halides undergo reduction process except

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  7. Mark the correct statement about aldehydes and ketones

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  8. A binary liquid solution is prepared by mixing n-heptane and ethanol. ...

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  9. For which of the following reactions DeltaH is less than DeltaE ?

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  10. In which cell the free energy of a chemical reaction is directly conve...

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  11. For a zero order reaction, the plot of concentration, vs time is line...

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  12. What is the ratio of kinetic energies of 3 g of hydrogen and 4 g of ox...

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  13. The molecular geometry of sulphuric acid is

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  14. Compounds formed when the noble gases get entrapped in the cavities of...

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  15. Which of the following elements involves gradual filling of 5f-level ?

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  16. Oxygen is gas but sulphur is solid because

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  17. Identify the compound A and B in the following reaction sequence. ("...

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  18. Complete the following reaction

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  19. Which of the following is incorrect ?

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  20. A coordination compound of cobalt has the molecular, formula containin...

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