ASTM D6847 gives the procedure for it
No.
In one molecule of bitumen there are 22-45atoms of carbon.
It doesn't.
They are all homologues that contain a benzene ring
Certainly not!
6
Less than 0.01%
Benzene
yes
A given sample of butane might contain traces of benzene, but pure butane does not.
An aromatic compound contain a benzene ring.