Number of σ (sigma) and π (pi) bonds present in ethylene (C₂H₄) molecule is respectively:

Correct Answer: 5 and 1

Ethylene molecule has the structure H₂C = CH₂.

Each C–H single bond forms one σ bond. There are four C–H bonds giving four σ bonds.

The carbon–carbon double bond consists of one σ bond and one π bond.

Therefore, total σ bonds = 4 + 1 = 5 and total π bonds = 1.