A) \[{{C}_{2}}{{D}_{2}}\]
B) \[Ca{{D}_{2}}\]
C) \[Ca{{D}_{2}}O\]
D) \[C{{D}_{2}}\]
Correct Answer: A
Solution :
\[\underset{\text{calcium carbide}}{\mathop{Ca{{C}_{2}}}}\,+\underset{\text{heary water}}{\mathop{2{{D}_{2}}O}}\,\xrightarrow{{}}{{C}_{2}}{{D}_{2}}+Ca{{(OD)}_{2}}\]
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