Question

Major product B of the following reaction has ____ $\pi$-bond.

Answer 1

Count the $\pi$-bonds:
Two $\pi$-bonds in the aromatic ring.
One $\pi$-bond in the carboxyl group.
Two $\pi$-bonds in the nitro group.
$\text{Total number of $\pi$-bonds} = 5.$
Final Answer: $5.$

Answer 2

Count the $\pi$-bonds:
Two $\pi$-bonds in the aromatic ring.
One $\pi$-bond in the carboxyl group.
Two $\pi$-bonds in the nitro group.
$\text{Total number of $\pi$-bonds} = 5.$
Final Answer: $5.$