Explain the following :
(i) The dipole moment of chloroethane is higher than that of chlorobenzene.
(ii) Although haloalkane are polar in character yet they are insoluble in water.

Explain the following : (a) The dipole moment of chlorobenzone is lower than that of cyclohexyl chloride. (b) Alkyl halides, though polar, are immiscible with water. (c) Grignard reagents should be prepared under anhydrous condition.

Explain why (i) the dipole moment of chlorobenzene is lower than that of cyclohexyl chloride? (ii) alkyl halides, though polar, are immiscible with water? (iii) Grignard reagents should be prepared under anhydrous conditions?

Give reasons: (i). C-Cl bond length in chlorobenzene is shorter than C-Cl bond length in CH_(3)-Cl (ii). The dipole moment of chlorobenzene is less than of cyclohexyl chloride. (c). S_(N^(1)) reactions are are accompanied by racemisation is optically active alkyl halides.