The dipole moment of phenol is smaller than that of methanol. Why?
The dipole movement is dependent on the polarity of the compound. They are directly proportional, and in the case of phenol, the carbon atom is hybridised, creating an electron-withdrawing effect on the benzene ring. But in methanol, the hybridisation of the carbon is , which results in an electron releasing effect. Due to this scenario, the bond polarity of the bond is more in phenol as compared to methanol. This directly results in smaller dipole movement in phenol.