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CBSE Class 10 Science 2025 Solved Paper All Sets

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Question : 4 of 20
Marks: +1, -0
Select from the following a hydrocarbon having one C-C bond and one C ≡ C bond :
Solution:  
Butyne⇒H−C∣H∥H−C∣H∥H−C≡C−H\text{Butyne} \Rightarrow H - \overset{\mathrm{H}}{\overset{\vert}{\mathrm{C}}}\underset{H}{\|} - \overset{\mathrm{H}}{\overset{\vert}{\mathrm{C}}}\underset{H}{\|} - C\equiv C - H
Propyne⇒H−C∣H∥H−C≡C−H\text{Propyne} \Rightarrow H - \overset{\mathrm{H}}{\overset{\vert}{\mathrm{C}}}\underset{H}{\|} - C\equiv C-H
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