Circles of how many different radii are needed to construct the following figure? [Figure: see page 21 of source PDF]

Figure 1 shows the skeleton of a T-rex dinosaur. Identify the correct distorted silhouette from the given options. [Figure: see page 20 of source PDF]

A printed transparent sticker (as shown on the left) is applied onto a glass cylinder such that the vertical edges meet. Which option is the correct representation? [Figure: see page 22 of source PDF]

Which of the options will result in the form shown on the left, when revolved around x-x' axis? [Figure: see page 19 of source PDF]

Image on the left shows a cylinder kept on the top of a cube. Height of the cylinder and side of the cube are equal. Parallel rays of light are falling on them at an angle of 45 degree. Which option shows the correct shadow? [Figure: see page 22 of source PDF]

Which of the options, when combined with block shown on top, will result in perfect 4x4x4 cube? [Figure: see page 19 of source PDF]

Shown on the left is a futon that becomes a mattress when opened and folds into a seat. Which option CANNOT be folded as a seat? [Figure: see page 23 of source PDF]

Image below shows configurations of jars filled with water. Which option will work as an air filter? [Figure: see page 18 of source PDF]

Biomimicry is the practice of looking to nature for inspiration to solve design problems. Shown below are plants and animals (top row: P kingfisher, Q humpback whale, R gecko, S burdock burr) that have inspired the design of products (bottom row: 1 wall-climbing gloves, 2 hook-an…