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1. Which of the following has the weakest carbon-carbon bond strength?
 
 
2. The hydrocarbon with the general formula \(C_nH_2{_n}{_+}{_n}\) is an-
 
 
3. Which of the following is an alkyne?
Answer variants:
\(C_2H_6\)
\(C_6H_10\)
\(C_3H_6\)
Alkanes