What is the total number of sigma bonds in CH₃CH₂C≡CH?
In CH₃CH₂C≡CH (but-1-yne), there are 9 σ bonds: 5 C-H, 2 C-C, 2 from C≡C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism