Question

Find the degree of unsaturation for the following compound:

• A. $7$
• B. $8$
• C. $9$
• D. $10$

Answer 1

The correct option is C $9$

Calculation of degree of unsaturation:

$\text{Number of double bonds}=3\Rightarrow 3\text{unsaturation}$
$\text{Number of triple bond}=1\Rightarrow 2\text{unsaturation}$
$\text{Number of ring}=4\Rightarrow 4\text{unsaturation}$
$\therefore$ Degree of unsaturation = 3 + 2 + 4 = 9