Process of heating the ores strongly in presence of oxygen, during which sulfide is converted to an oxide is called roasting.

True

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False

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Solution

The correct option is A
True

Roasting is a process of heating of sulfide ore to a high temperature but below it's melting point in presence of air. During roasting, the ores gets converted into it's oxide.
For example:
$2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2} (g)$

During roasting Copper (I) sulfide reacts with oxygen at high temperature to form Copper (I) oxide and sulfur dioxide a gas.

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