In the given structure, number of sp and $\mathrm{sp}^2$ hybridized carbon atoms present respectively are :

• A

  4 and 5
• Correct answer
  B

  3 and 5
• C

  3 and 6
• D

  4 and 6

Solution

Number of sp and $\mathrm{sp}^2$ hybridised carbon atom are 3 and 5.

Hence, the correct answer is option: 'B'.