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Liquation is used for purification of me...

Liquation is used for purification of metal if:

A

`1`.Metal and impurity differ in Densities

B

`2`. Metal and impurity differ in Melting points

C

`3`. Metal and impurity differ in Boiling points

D

`4`. Metal and impurity differ in Solubilities

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VGS PUBLICATION-BRILLIANT-PRINCIPLES OF METALLURGY-EXERCISE
  1. Which of the following impurities are present in a metal after reducti...

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  2. The selection of process of purification of a metal depends on:

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  3. Liquation is used for purification of metal if:

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  4. Chemically rust is a

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  5. When an Iron object is painted, the process of corrosion is reduced du...

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  6. The furnaces in which there is no direct contact between the hearth an...

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  7. Active metals are not extracted by the electrolysis or aqueous electro...

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  8. Which of the following is wrong?

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  9. Which of the following is correct about calcination ?

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  10. Which of the following is true about preparation of Iron by smelting p...

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  11. Which of the following is true about the electrolytic refining of meta...

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  12. Aluminium is more reactive than Iron, but rate of corrosion in Iron is...

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  13. Which of the following method is used for purification of metals conta...

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  14. The electrolyte used in refinery of copper is

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  15. The main use of CaCl2 in laboratory is

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  16. Assertion (A) : Gold is available in nature in free state. Reason (R) ...

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  17. Metals are available in: i) free state ii) mixed state.

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  18. Assertion (A) : Bauxite is ore for Aluminium metal. Reason (R) : The m...

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  19. Assertion (A) : Oxygen - sulpher group in the periodic table is called...

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  20. The correct steps of process of metallurgy is i) purification of the m...

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