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In thermite reduction Al is chosen as re...

In thermite reduction Al is chosen as reducing agent because,

A

A. aluminium has low melting point

B

B. aluminium has low density

C

C. aluminium has very high affinity for oxygen and formation of `Al_2O_3` is endothermic

D

D. aluminium has very high affinity for oxygen and formation of `Al_2O_3` is highly exothermic

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BRILLIANT PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -LEVEL - II
  1. Roasting and calcination are usually carried out in,

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  2. Which of the following statements is wrong?

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  3. Select the correct statement:

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  4. Which of the following statements about Ellingham diagram are true? ...

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  5. The materials which are added along with the calcinated iron ore into ...

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  6. Which of the following statements is false?

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  7. From copper pyrite, copper is extracted in two stages. In the reverber...

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  8. During the extraction copper by bessemersiation, bessemer converter is...

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  9. In the extraction of zinc, during roasting the temperature is kept abo...

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  10. In thermite reduction Al is chosen as reducing agent because,

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  11. In thermite reduction, ignition mixture consists of

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  12. In hydrometallurgy, sometimes a flux is added,

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  13. In the proces of extraction of gold, Roasted ore + CN^(-) + H(2)O ov...

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  14. In the extraction of Al by Hall-Heroult's process, electrolyte contain...

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  15. Which is not true about electrolysis of "brine solution"?

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  16. Hoop's processes is used for the refining of:

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  17. In the electrorefining of impure aluminium, molten AICI3 is not used a...

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  18. Which of the following statement is false?

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  19. Lanthanoid metals can be separated by:

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  20. Which of the following is incorrectly matched:

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