Chemistry · Group 13 to Group 18 Elements
Flux in the smelting process is added to
Flux in the smelting process is added to
- A. decrease the solubility of impurities
- B. increase the fusion temperature of roasted ore
- C. convert impurities into slag
- D. all of the above
Step-by-step solution
Flux is added during smelting to chemically combine with impurities (such as silica or metal oxides) to form slag, a fusible byproduct that can be easily separated from the molten metal. It does not decrease solubility of impurities (A) nor increase fusion temperature (B); in fact, it often lowers the melting point. Therefore, only option C is correct.
Related MCQs
- White phosphorus exists as:…
- Which of one of the following burns in the air giving a gaseous oxide? (at room temp.)…
- The metal with which hydrogen reacts to form metal hydride is:…
- Oxide of nitrogen formed in the atmosphere during the lightenings is :…
- Which among the following group 15 element forms most stable pentavalent compound?…