A) ethane
B) ethylene
C) methane
D) acetylene
Correct Answer: D
Solution :
\[\underset{\begin{smallmatrix} Calcium \\ caride \end{smallmatrix}}{\mathop{Ca{{C}_{2}}}}\,+2{{H}_{2}}O\xrightarrow{{}}\underset{Acetylene}{\mathop{HC\equiv CH+}}\,Ca{{(OH)}_{2}}\]
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