Polarity and Nature of Bonds

Polarity:
Benzene is a non-polar molecule.  This is because there is an even distribution of electrons throughout the molecule.

Nature of Bonds:
C-C  2.5-2.5=0 (2.5 is the electronegativity value of carbon)
This is a absolutley covalent bond because the difference is 0.

H-C  2.5-2.2= 0.3 (this is the difference between the electronegativity values)
This is a very covalent bond because the difference is 0.3.