Explanation

(c)
Degree of instauration$= \frac{2n_{1} + 2 - n_{2}}{2}$; where, $n_{1}$ is the number of carbon atoms and $n_{2}$ the number of hydrogen atoms.
In [image:13_image257.emf] compound
Number of carbon atoms =8
Number of hydrogen atoms=12
Degree of unsaturation$= \frac{2 \times 8 + 2 - 12}{2} = 3$