Q.

Burning pyrites ore gives out –

A. Carbon dioxide gas
B. Sulphur dioxide gas
C. Nitrogen dioxide gas
D. Nitric oxide gas
Answer» B. Sulphur dioxide gas
Explanation: The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS9. Pyrite remains in commercial use for the production of sulfur dioxide, for use in such applications as the paper industry, and in the manufacture of sulfuric acid.
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