Chemistrymedium · Past Paper
What is the purpose of adding limestone in the extraction of iron?
AAs a reducing agent
BTo act as a flux
CTo provide heat
DTo oxidize the ore
✓ Correct Answer: B — To act as a flux
Limestone (CaCO3) decomposes to CaO, which acts as a flux to remove silica (gangue) as slag.
Share this question
More from Chemistry
- Which factor increases the frequency of effective collisions according to Collision Theory?
- Which of the following reactions is used to test for Carbon Dioxide gas?
- Which of the following is an example of an autocatalytic reaction?
- What is the value of the gas constant R in SI units?
- Which of the following represents a decomposition reaction?