How many and bonds are there in 1-phenylpropene, C_6H_5-CH=CH-CH_3?

JEE Main Chemistry question

How many and bonds are there in 1-phenylpropene, ?

Answer: (C)

The phenyl ring contributes 6 C–C σ + 5 ring C–H σ + 3 delocalised π-bonds. The ring–chain C–C bond is 1 more σ. The unit contributes 2 C–H σ + 1

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Question ID VK-156088