give the characteristics for So2 and H2
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Test : Sulphur dioxide gas turns acidified potassium dichromate solution from orange to green colour. 3. H2 gas: If a burning match stick is brought near Hydrogen, the match stick burns with POP sound.
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Characteristic test for the following Gases :
CO2 gas :
SO2:
H2 gas:
O2 gas :
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