A) methane
B) ethane
C) ethene
D) ethyne
Correct Answer: D
Solution :
Calcium carbide on reaction with water to give ethyne. \[Ca{{C}_{2}}+{{H}_{2}}O\xrightarrow{{}}\underset{ethyne}{\mathop{{{C}_{2}}{{H}_{2}}}}\,+Ca{{(OH)}_{2}}\]
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