Answer. Melting point of a compound depends upon the nature of the bonding of the compound. Compounds having covalent bonding have low melting points than that of compounds having ionic bonding in them. As organic compounds consists of covalent bonding their melting point are low.
Boiling point depends upon intermolecular forces between the molecules. Organic compounds are mostly non-polar or slightly polar, Intermolecular forces between the organic compounds are London forces of attraction. Because of these weak forces boiling points of organic compounds are low.