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ICSE Class 10 Chemistry 2013 Paper

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Give balanced equations for the laboratory preparations of the following organic compounds :
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Question : 69 of 84
Marks: +1, -0
An unsaturated hydrocarbon from calcium carbide.
Solution:  
CaC2+2H2OCalcium carbide→C2H2+Ca(OH)2\underset{\text{Calcium carbide}}{\mathrm{CaC}_2 + 2 \mathrm{H}_2\mathrm{O}} \rightarrow \mathrm{C}_2\mathrm{H}_2 + \mathrm{Ca}(\mathrm{OH})_2
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