Given below are two statements.\ In the light of the below statements, choose the correct answer fr

Question

Given below are two statements.\ In the light of the below statements, choose the correct answer from the options given below:\

Professor PC Thomas Classes · Answer

(c) : Dipole moment of crotonaldehyde $(3.67 \mathrm{D})$ is more than butanal ( 2.52 D ). Due to conjugation in crotonaldehyde, it has a higher dipole moment than butanal.\ Hence, statement-I is correct, whereas statement-II is incorrect as in crotonaldehyde partial double bond character is present between $\mathrm{C}_{1}-\mathrm{C}_{2}$, due to resonance. So, it has a smaller $\mathrm{C}_{1}- \mathrm{C}_{2}$ bond length than that of butanal, in which $\mathrm{C}_{1}-\mathrm{C}_{2}$ bond is a single bond.\