Which of the following cubes in the answer figure CANNOT be made based on the unfolded cube in the question figure?

Appeared in: DSSSB -28 August 2019 (Shift-2)

Explanation

The core principle for solving cube net problems is that faces opposite each other on the 2D net cannot be adjacent (share an edge) on the 3D folded cube.
In the given net, the face with the 'plus' (+) symbol and the face with the 'dot' (.) symbol are in alternate positions in a straight line, making them opposite faces.
The cube in Image A incorrectly shows the 'plus' face and the 'dot' face adjacent to each other.
This arrangement is physically impossible when folding the given net, as opposite faces can never touch.

Option B: The cube in Image B is a valid construction. It shows the 'plus' (+), 'star' (☆), and 'circle' (O) faces. None of these are opposite to each other.
Option C: The cube in Image C is a valid construction. It shows the 'three lines' (=), 'four dots', and 'dot' (.) faces. None of these are opposite to each other.
Option D: The cube in Image D is a valid construction. It shows the 'plus' (+), 'three lines' (=), and 'star' (☆) faces. None of these are opposite to each other.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Spatial Reasoning as background academic context rather than a clinical decision trigger.
While not a clinical question, this type of logical reasoning problem assesses spatial awareness and problem-solving skills.
Nurses utilize these cognitive skills daily for tasks such as organizing equipment in a sterile field, navigating complex hospital layouts, and interpreting spatial information from medical imaging.
Strong problem-solving abilities are crucial for critical thinking and making sound clinical judgments under pressure.

How to Approach the Question

First, carefully examine the unfolded 2D net of the cube provided in the question.
Identify the pairs of opposite faces. A simple rule is that in a straight strip of faces, alternate faces are opposite. The two faces on the flaps are also opposite each other.
Systematically analyze each of the four answer options (the folded 3D cubes).
For each option, check if any of the visible adjacent faces correspond to a pair you identified as opposite.
The cube that shows two opposite faces touching each other is the one that cannot be formed and is the correct answer.
Remember the question asks which cube CANNOT be made, so you are looking for the impossible configuration.

Concept Tested & Keywords

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Practise the full DSSSB -28 August 2019 (Shift-2)

Attempt every question from this paper in a timed mock, then review the full solution for each one.