Heating a pyrite in air to remove sulphur is known as:

smelting

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roasting

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bessemerisation

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calcination

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Solution

The correct option is B roasting
Roasting is a process of heating of sulphide ore to a high temperature in the presence of air. It is a step of the processing of certain ores.

Hence, option B is correct.

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Heating of an ore in the presence of air to remove impurities containing sulphur is called:

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