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Which of the following reagent is used t...

Which of the following reagent is used to separate the impurity from red bauxite

A

Conc. HCl

B

`H_(2)SO_(4)`

C

NaOH

D

`HNO_(3)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PRINCIPLES OF METALLURGY-Objective exercise -2 (Extraction of some metals)
  1. Metal extracted from molten cryolite is

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  2. From the below Ellingham diagram, incorrect statement among the follo...

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  3. Metal extracted only by electrolysis process is

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  4. Heating mixture of Cu(2) O and Cu(2) S will give

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  5. Metal that can be extracted by eletrolysis of its salt even from aqueo...

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  6. The final step in the metallurgical extraction of Cu metal from Cu pyr...

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  7. The process of bringing the metal or its ore into solution by the acti...

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  8. Exothermic reaction among the following is A) Cr(2) O(3) + 2All to...

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  9. In the extraction of silver from argentite are the one is treated with...

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  10. Which of the following reagent is used to separate the impurity from r...

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  11. The metal iron obtained for the last furnace contains X' percent of ca...

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  12. Ag(2) S + 4 NaCN to 2X + Na(2) S Incorrect statement about 'X' is

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  13. Regarding the electrolysis of Alunina, the correct statements A) Cr...

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  14. Gold and silver are extracted from their repective ores by

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  15. In which of the following pair of metals, both are commercially extrac...

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  16. The percentage of carbon in steel is approx

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  17. Which of following metal is extracted by the electrolysis of its salt ...

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  18. The charge of the Blast Furnace consists of

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  19. The correct statements with respect to Ellingham's diagram among the f...

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  20. Which of the following element is extracted using I (2) as the reactan...

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