Question : Burning pyrite ore gives out
Option 1: Carbon dioxide gas
Option 2: Sulphur dioxide gas
Option 3: Nitrogen dioxide gas
Option 4: Nitric oxide gas
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Correct Answer: Sulphur dioxide gas
Solution : The correct answer is Sulphur dioxide gas.
In an oxygen-containing atmosphere, pyrite will be oxidized to form a series of final products, such as hematite (Fe 2 O 3 ), magnetite (Fe 3 O 4 ), iron (ferric or ferrous) sulfate (Fe 2 (SO 4 ) 3 , FeSO 4 ) and sulfur dioxide (SO 2 ).
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