Question

Assertion: When limestone is heated strongly, it gives off $C{O}_2$. In metallurgy, this process is known as calcination.
Reason: Limestone is heated strongly in the presence of air

• A. Both assertion and reason are correct and the reason is the correct explanation for assertion.
• B. Both assertion and reason are correct but the reason is not the correct explanation for assertion.
• C. Assertion is correct but the reason is incorrect.
• D. Both the assertion and reason are incorrect.

Answer 1

The correct option is C Assertion is correct but the reason is incorrect.

Limestone is heated strongly in the absence/limited supply of air.

$CaC{O}_{3\text{(s)}}\to Ca{O}_{\text{(s)}}+C{O}_{2\text{(g)}}$

Heating the ore in the absence of air is calcination.