List of top Observation and design sensitivity Questions on Spatial visualization

Perspective view of two identical hollow cylinders is shown below. Assume the outer diameter and length of each cylinder are equal. The two cylinders intersect each other at 90 degrees to form a union, such that their centroids (centre of axis) coincide. How many visible surfaces will the resultant union have?

A hollow cylinder is lit by sunlight at 45 degrees as shown on the left. If seen from a fixed point, which option is the closest representation of the lit area inside the cylinder?

A grid PQRS is distorted such that its edges get stretched or compressed UNIFORMLY to form P’Q’R’S’ as shown on the left. Identify the correct distorted grid from the options.

“OPEN HEART” is printed on a folded paper as shown below. Identify the CORRECT option when the paper is unfolded and seen from the other side.

Which option shows the correct perspective drawing of the object when it is viewed from the direction as shown on the left?

Two views of a 3D object are shown on the left. Which of the option(s) is/are the same object?

Three views of a stack of sugar cubes are shown below. What is the MINIMUM number of cubes that are required to produce this stack?

A table made out of cardboard is shown on left. If dotted lines indicate folding, which of the option(s) is/are the unfolded view(s) of the table?

How many spheres are rotating in the space shown below?

A coloured sheet is folded into an octahedron as shown on the left. Which of the options show(s) the CORRECT rotated views of the octahedron?