Chemistry - GOC Question with Solution | TestHub

Alkyl groups generally show a $+\mathrm{I}$ electron-releasing effect relative to hydrogen, including when attached to a pi system. The gas-phase dipole moment of acetone is about 2.88 $\mathrm{D}$, compared with 2.69 $\mathrm{D}$ for acetaldehyde. Their normal boiling points are about 56 $\mathrm{C}$ and 20 $\mathrm{C}$, respectively. Thus A, $\mathrm{B}$ and $\mathrm{C}$ are true and $\mathrm{D}$ is correct.