Assertion: For the extraction of iron,
Question:

Assertion: For the extraction of iron, haematite ore is used.

Reason: Haematite is a carbonate ore of iron.

1. Only the reason is correct

2. Both the assertion and reason are correct, but the reason is not the correct explanation for the assertion.

3. Both the assertion and reason are correct and the reason is the correct explanation for the assertion.

4. Only the assertion is correct.

Correct Option: , 4

Solution:

For the extraction of iron, haematite ore $\left(\mathrm{Fe}_{2} \mathrm{O}_{3}\right)$ is used