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ICSE Class 10 Chemistry 2019 Paper

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Write a balanced chemical equation for the preparation of :
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Question : 63 of 86
Marks: +1, -0
Ethyne using calcium carbide
Solution:  
CaC2+2 H2OCalcium carbide→ΔCa(OH)2+C2H2↑Ethyne\underset{\text{Calcium carbide}}{\mathrm{CaC}_2 + 2\,\mathrm{H}_2\mathrm{O}} \\ \xrightarrow{\Delta} \mathrm{Ca}(\mathrm{OH})_2 + \underset{\text{Ethyne}}{\mathrm{C}_2\mathrm{H}_2 \uparrow}
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