The total number of sigma bonds in C₅H₁₀ (cyclopentane) is:
In C₅H₁₀ (cyclopentane), there are 5 C-C sigma bonds in the ring and 10 C-H sigma bonds, totaling 15 sigma bonds.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Kossel-Lewis Approach and Octet Rule and Lewis Structures