1)

 The number of $\sigma$  and $\pi$- bonds in 2-formylbenzoic acid are  respectively


A) 10,3

B) 14,3

C) 12,5

D) 17,5

Answer:

Option D

Explanation:

 Structure of  2-formyl benoic acid is 

1062021801_c1.JPG

 Thus, it has 17 $\sigma$ and 5 $\pi$ bonds.