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Question: Answered & Verified by Expert
An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation?
ChemistryGeneral Principles and Processes of Isolation of MetalsNEET
Options:
  • A H2SO4
  • B CaCO3
  • C SiO2
  • D Both B and C
Solution:
1846 Upvotes Verified Answer
The correct answer is: CaCO3
CaCO3 on heating gives CaO, which is basic in nature. It can react with acidic impurities to form slag.

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