Answer
See the answer below.
Work Step by Step
a) Yes, it has asymmetrical polar bonds, making the vectorial sum of dipole moments nonzero.
b) The most electronegative atoms in the molecule are the oxygens, and that's where the negative charges are concentrated. For the positive charges, hydrogen is the least electronegative.
c) Possible Lewis structure:
$H-C\equiv C-C\equiv N:$