Select from the alternatives, the box that can be formed by folding the sheet in fig (X):
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (B) only
When a sheet like fig (X) is folded into a cube, two squares with one square between them in a straight line become opposite faces, and two opposite faces are never seen together in one view of the cube.
Left column: the top and bottom squares have X between them, so they are opposite (pair 1)
Right column: the top and bottom squares have the shaded square between them, so they are opposite (pair 2)
The two squares left, X and the shaded square, form the third pair: X is opposite the shaded face
Cubes (A), (C) and (D) each show X and the shaded face side by side, so none of them can be made from this sheet. Cube (B) shows the shaded face with two blank faces next to it, which the sheet does give.