Question

Assertion : Roasting is a process in which the ore is heated strongly in absence of air.
Reason : Concentration of sulphide ore is done by calcination.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (D)

Roasting is a process in which the ore is heated in presence of air. Sulphide ores are concentrated mainly by froth floatation process.