Question

Which of the following carbon atoms present in the molecule given below are asymmetric?

Answer 1

$\text{Asymmetric carbon}$

Asymmetric/Chiral carbon is that carbon in which carbon has formed four bonds with four different groups.

$\text{Analysing the given carbon atoms}$

Carbon (a)

Carbon does not attach to four different atoms because it is attached by double bond to oxygen. So, carbon $\left(a\right)$ is not symmetric.

Carbon (b)

Carbon attached to four different groups. So, carbon $\left(b\right)$ is asymmetric.

Carbon (c)

Carbon attached to four different groups. So, carbon $\left(c\right)$ is asymmetric.

Carbon (d)

Carbon does not attach to four different atoms because it is attached by double bond to oxygen. So, carbon $\left(d\right)$ is not symmetric.

Therefore, correct option is $\left(B\right)$.