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Roasting

As a result o...

Question

As a result of roasting, the sulphide ore is converted to metallic form.

A

True

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B

False

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Solution

The correct option is B False
Roasting is the process in which the mainly sulphide ores are heated below their melting point in presence of air. The sulphide ores are converted to their respective oxides and the impurities are also oxidised and removed.

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Sulphide ore is converted into pure metal (say $C u$ ) by following steps.

Bessemerisation $\to$ Roasting $\to$ Electrolysis

Q. A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
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(c) calcination
(d) anodising

Q. Roasting is carried out to :

1) convert sulphide to oxide and sulphate.
2) remove the water of hydration.
3) melt the ore.
4) remove arsenic and sulphur impurities.

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S O_{2}

(ii) Remove water of hydration
(iii) melt the ore
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