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Roasting is carried out to :...

Roasting 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

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The correct Answer is:
A, B, D
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Consider the following statements : Roasting is carried out to : 1. Convert sulphide into oxide 2. Melt the ore 3. Remove moisture, water of hydration and expel organic matter 4. Remove sulphur and arsenic in the form of volatile oxides Out of these statements :

Consider the following statements . Roasting is carried out to : (i) convert sulphide to oxide and sulphate. (ii) to remove impurities of CuS and FeS present in the ore of tin stone (SnO_(2)) as CuSO_(4) and FeSO_(4) . (iii) melt the ore. (iv) remove arsenic and sulphur impurities. of these statements.

Roasting is carried out in case of:

Though tin stone is oxide of tine, yet roasting is carried out for this ore. Why ?

Roasting is carried out in extraction of metal in how many ores/minerals? Chalcopyrite, magnetite, Cassiterite containing impurity of pyrites of Fe and Cu, Galena, Zinc blende, Siderite,

In which of the following roasting is carried out ?

The process of calcination and roasting is carried out in reverberatory furnace.

When roasting is carried out: (P) sulphde ore sare converted into oxide and suphate (Q) Remove water of hydration (R ) Melt the ore (S) Remove arsenic and sulphur impurities

VK JAISWAL-METALLURGY-One OR MORE ANSWERS IS/ ARE CORRECT
  1. Which of the following pair consists of ore of the same metal ?

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  2. The process (es) by which lighter earthy particles are freed from the ...

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  3. Roasting is carried out to :

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  4. The chemical treatment of the ore for concentration is done in the cas...

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  5. Froth floatation :

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  6. Which of the following reaction(s) occurs during calcination?

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  7. Amphoteric nature of aluminium is employed in which of the following p...

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  8. Which of the following is true for calcination of a metal ore ?

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  9. The difference (s) between roasting and calcination is / are :

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  10. The etraction of metals from oxide ores involves

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  11. Metals which can be extracted by smelting process are :

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  12. Of the following reduction processes, correct processes are :

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  13. In the extraction of aluminium metal, one of the process is summarised...

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  14. During the production of iron and steel.

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  15. The smelting of iron in a blast furnace involves the following process...

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  16. Which one of the following metals can be extracted by aluminothermic p...

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  17. For which of the following metal, the carbon reduction cannot be used ...

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  18. The advantage(s) of using carbon to reduce a number of oxides and othe...

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  19. The disadvantage of carbon reduction method are :

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  20. Which of the following metals are extracted from its ore by using self...

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