Final answer:
To determine the degree of unsaturation in the compound C10H6N4, you can count the double bonds and rings present in the molecule.
Step-by-step explanation:
To determine the degree of unsaturation in the compound C10H6N4, you can count the double bonds and rings present in the molecule. The degree of unsaturation is equal to the number of double bonds plus the number of rings. In this case, since there are no double bonds and no rings in the compound, the degree of unsaturation is 0.
Therefore, the answer is a) Count the double bonds and rings.