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The metallic lustre of metals is due to ...

The metallic lustre of metals is due to :

A

high density of metals

B

high polish on the metal surface

C

reflection of light by electrons

D

Chemical inertness of metals.

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The correct Answer is:
C
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DINESH PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -Multiple Choice
  1. In the cyanide extraction process of silver from argentite ore, the ox...

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  2. Sulphide ores are common for the metals

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  3. The metallic lustre of metals is due to :

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  4. The process of zone refining is used in the purification of :

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  5. Which is an oxide ore ?

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  6. In the metallurgy of iron, when lime stone is added to blast furnace, ...

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  7. The statement that is NOT correct is that

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  8. Cryolite is

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  9. In the extraction of copper from its sulphide ore, the metal is finall...

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  10. Metals are usually not found as nitrates in their ores. Out of the fol...

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  11. In the context of the Hall-Heroult process for the extraction of Al, w...

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  12. Roasted gold ore +CN^(-)+H(2)O overset(O(2)) to [X]+OH^(-)

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  13. Which of the following ores is best concentrated by Froth Floatation p...

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  14. Which of the following is a carbonate ore ?

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  15. Extraction of gold and silver involves leaching the metal with CN^(-) ...

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  16. Purification of alumina by electrorefining is known as :

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  17. Considering Ellingham diagram, which of the following metals can be us...

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  18. Cassiterite is an ore of :

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  19. The first step in the extraction of copper is :

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  20. Assertion : Zone refining is based on the solubilities of impurities i...

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