why is methyl chloride hydrolysed more easily than chlorobenzene
Dear student!
Actually, the lone pair of chlorine atom is delocalised over the conjugated double bond ring of benzene which adds a double bond character to the C-Cl bond of the chlorobenzene which makes the bond shorter and stronger too, so the hydrolysis becomes difficult while in alkyl halides i.e. methyl chloride there is a single bond and polarity too which is easily hydrolyzed.
Actually, the lone pair of chlorine atom is delocalised over the conjugated double bond ring of benzene which adds a double bond character to the C-Cl bond of the chlorobenzene which makes the bond shorter and stronger too, so the hydrolysis becomes difficult while in alkyl halides i.e. methyl chloride there is a single bond and polarity too which is easily hydrolyzed.