Chemistry
Grade-10
Easy
Question
Which is the correct statement from the following?
- Calcination is heating ore in presence of air
- Calcination is heating ore in the presence of oxygen
- Roasting is heating ore in presence of air
- Roasting is heating ore in the absence of air.
Hint:
Roasting is heating ore in presence of air
The correct answer is: Roasting is heating ore in presence of air
Roasting is a process of heating of sulphide ore to a high temperature in presence of air.
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