An organic compound with C₅H₈ has a degree of unsaturation of 2. Which functional group combination could it contain?
Degree of unsaturation = (2C + 2 - H)/2 = (12 - 8)/2 = 2. CH₃CH₂C≡CCH₃ has one triple bond (2 units), fitting C₅H₈.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance