Which of the following hydrocarbons has the lowest dipolemoment? Give explanation.(1) Trans-2-butene(2) 2-butyne(3) 1-butyne(4) But-1-en-3-yne

Dipole moment (μ) is the measure of net molecular polarity,
trans 2 butene has a dipole moment of 0 because the presence of each CH3 group on the opposite side cancels each other effect

Dipole moment (μ) is the measure of net molecular polarity, trans 2 butene has a dipole moment of 0 because the presence of each CH3 group on the opposite side cancels each other effect