How many sigma \((\sigma )\) and pi \((\pi )\) bonds are there in \({\text{C}}{{\text{H}}_{\text{3}}}{\text{C}}{{\text{H}}_{\text{2}}}{\text{CCC}}{{\text{H}}_{\text{2}}}{\text{COOH}}\)?

A. 13\(\sigma \) and 5\(\pi \)

B. 15\(\sigma \) and 2\(\pi \)

C. 15\(\sigma \) and 3\(\pi \)

D. 15\(\sigma \) only

C

This was thought to be a hard example “to test student understanding of hybridization and bond types”. This type of question is not new and was answered correctly by 79% of the candidates. All a candidate needs to do is to count the number of \(\pi \)-bonds.