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Consider the following statements regard...

Consider the following statements regarding roasting.It is carried out to
A) convert sulphide to oxide and sulphate
B) remove water of hydration
C) melt the ore
D) remove arsenic and sulphur impurities
Of these statements :

A

A, B and C are correct

B

A and D are correct

C

A, B and D are correct

D

B, C and D are correct

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-REVISION EXERCISE -METALLURGY
  1. Exothermic reaction among the following is A) Cr(2) O(3) + 2All to...

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  2. Consider the following statements regarding roasting.It is carried ou...

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

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  4. Which of following metal oxide (s) can be reduced to the corresponding...

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

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  6. Incorrect statement is

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  7. Ag2S is digested with 1% solution of NaCN and air is blown into the so...

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  8. Sodium connot be extracted by electrolysis of aqueous solutions due to

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  9. Regarding the electrolysis of Alumina, the correct statements A) Cry...

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  10. In froth flotation process which of the following is used as froth st...

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  11. Silver sulphide is heated in the presence of air and common salt to co...

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  12. Metal extracted only by electrolysis process is

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  13. Silver can be precipitated in hydrometallurgy by using aluminium. Thi...

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  14. At which one of the following condition, a reducing agent is suitable ...

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  15. From the below Ellingham diągram, incorrect statement among the follow...

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  16. Colourless solutions of the following four salts are placed separately...

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  17. Zirconium and titanim are purified by

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  18. Pb and Sn are extracted from their chief ore by

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

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  20. The process of protecting iron by coating with zinc is called

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