List of top Observation and design sensitivity Questions on Spatial Reasoning asked in CEED

Isometric view of a solid copper object is shown below. If a constant heat source of 100 degrees C is applied at the point P continuously, which point on the solid will reach the temperature of the heat source the earliest? Neglect heat losses and assume point P lies on an equilateral triangle.

Several magnetic and non-magnetic bars of equal dimensions are glued together as shown on the left. If blue denotes magnetic north, red denotes magnetic south and grey denotes non-magnetic material, what will be the configuration of the faces on the other end?

A red dot is connected with two non-elastic strings P and Q of equal length. The strings are fixed at points 1 and 2, as shown below. Consider both the strings, points 1, 2, and the red dot are all on the same plane throughout the operations. If one of the strings is fully stretched (taut) at all times, what will be the shape of the path traced by the dot?

A solid object with triangular groove is shown on the left. Which option(s) along with this object can form the combination shown on the right?

A hard rubber roller is cut with a ‘V-shaped’ profile at three locations as shown in the Top View in the image on the left. The roller is then dipped in blue colour and rolled over a white plane. Which option shows the correct impression on the plane?

Coloured strips are printed on a transparent sheet as shown below. The bottom half of this sheet is folded backwards along the PQ axis to form a semi-circle. Which of the option(s) will be a part of the resultant semi-circle?