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प्रश्न
How will you prove that oxide formed by sulphur is acidic in nature?
उत्तर
Sulphur dioxide gas turns moist blue litmus paper red, because it reacts with water to form sulphurous acid. Hence, it is acidic in nature.
SO2 + H2O → H2 SO3
Sulphur dioxide Water Sulphurous acid
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