'A' is: [JEE Main 12-4-2019 Afternoon]
A) \[CH\equiv CH\]
B) \[C{{H}_{3}}-C\equiv CH\]
C) \[C{{H}_{2}}=C{{H}_{2}}\]
D) \[C{{H}_{3}}-C\equiv C-C{{H}_{3}}\]
Correct Answer: B
Solution :
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