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Question
The gas formed when calcium hydrogen sulphite reacts with dilute HNO3:
Options
Sulphur trioxide
Hydrogen
Sulphur dioxide
Hydrogen sulphide
MCQ
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Solution
Sulphur dioxide
Explanation:
Hydrogen sulphites (bisulphites) react with dilute mineral acids to liberate sulphur dioxide gas (SO2) along with salt and water.
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