ICSE Class 10 Chemistry 2016 Solved Paper

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Identify the gas evolved and give the chemical test in each of the following case :
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Question : 52
Total: 85
Dilute hydrochloric acid reacts with sodium sulphite.
Solution:  
Sulphur-di-oxide gas is evolved.
Colourless, gas with smell of burning sulphur. It turns acidified potassium dichromate orange to green.
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