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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

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The correct Answer is:
C
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AAKASH SERIES-PRINCIPLES OF METALLURGY-Objective exercise -2 (Occurance and general principles)
  1. X' is substance which combines chemically with impurities associated w...

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  2. In Goldsmith thermite process reductant in

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  3. Match the following {:("List-I","List-II"),((1)"Liquation",(a)"Volat...

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  4. In which of the following products are in the molte state

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  5. The removal of impurities from an ore by forming molten mass is called

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  6. Cryolite is chemically

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  7. In the froth flotation process for the purification of minerals the pa...

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  8. Match the following : {:("List-I","List-II"),((1)"vanArkel method",(...

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  9. Match the following {:("List-I (Type of mineral)","List-II"),((1)"Ox...

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  10. {:(" List-I "," List-II "),("1) Argentite ","a) KCl"),("2) Horn si...

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  11. Match items of Column-I with the items of Column II and assign the cor...

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  12. Match the following List-I (Concentration method) 1) Hydraulic wa...

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

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  14. All of the following metals are silvery white except

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

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  16. Neutral refractory material used in furnaces is

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  17. Zirconium and titanim are purified by

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

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  19. What is pyrometallurgy ?

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  20. Match the following {:("List-I ","List-II "),("A) Zone refining ",...

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