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ICSE Class 10 Chemistry 2013 Paper

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Question : 30 of 84
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In the given equation identify the role played by concentrated sulphuric acid S+2H2SO4→3SO2+2H2O\mathrm{S} + 2\mathrm{H}_2\mathrm{SO}_4 \rightarrow 3\mathrm{SO}_2 + 2\mathrm{H}_2\mathrm{O} :
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