Question

Statement I The dipole moment of alcohols is $2.3-2.8\, D$ and that of aldehydes and ketones is $1.6-1.8 \,D$.
Statement II The $\pi$-electrons of the $C == O$ are loosely held and hence can be shifted towards $O$-atom more readily than the more tightly held $\sigma$-electrons of the $C - O$ bond in alcohols.

• A. Both Statement $I$ and $II$ are correct and Statement $II$ is the correct explanation of Statement $I$.
• B. Both Statement $I$ and $II$ are correct and $II$ is not the correct explanation of Statement $I$.
• C. Statement $I$ is correct, Statement $II$ is incorrect.
• D. Statement $II$ is correct, Statement $I$ is incorrect.

Answer 1

Answer: (D)

The dipole moment of aldehydes and ketones ( $2.3-2.8\, D )$ is much higher than that of alcohols $(1.6-1.8\, D )$.