AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

In structure (a), all groups are different; therefore, (a) is chiral.
In structure (b), two groups are identical; therefore, (b) is not chiral (achiral).
In structure (c), all groups are different; therefore, (c) is chiral.
In structure (d), two groups are identical; therefore, (d) is not chiral (achiral).