GATE 2025 Chemical Engineering, Q10 · General Aptitude
The correct answer is B, Shape B.
Question
An object is said to have an n-fold rotational symmetry if the object, rotated by an angle of is identical to the original. Which one of the following objects exhibits 4-fold rotational symmetry about an axis perpendicular to the plane of the screen?
- A. Shape A
- B. Shape B
- C. Shape C
- D. Shape D
Official answer: Shape B
Why
GATE 2025 official key: (B), the shape that maps onto itself under four successive rotations in the official figure.
Explanation cross-checked for consistency. Final answer matches the official IIT answer key.