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How many (i) $sp^2$ hybridised carbon atoms and (ii) $\sigma$ bonds are present in the following compound?
A
8, 5
B
7, 5
C
8, 6
D
7, 6
Detailed Solution
Counting the $sp^2$ hybridised carbons (aromatic ring carbons, the alkene carbons, the ester carbonyl carbon, and the aldehyde carbon) and the total number of $\sigma$ bonds in the substituted cinnamate-aldehyde structure gives 7 $sp^2$ carbons and 6 $\pi$ bonds (as per the figure) for this compound.