Chapter 14: Mensuration — Online MCQ Test
MATHS · Samacheer Kalvi 7th · Tamil Nadu State Board
Practice Chapter 14: Mensuration with a free chapter-wise online MCQ test.
This chapter covers: Surface area and volume of solids like cube cuboid and cylinder surface area volume solids.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 14: Mensuration — Important Questions & Answers
What is the unit of surface area of a solid?
- A. Cubic units
- B. Square units
- C. Linear units
- D. No unit
Answer: B. Square units
Surface area measures the area covered by the outer surface of a solid, so it is expressed in square units.
Surface area measures the area covered by the outer surface of a solid, so it is expressed in square units.
The volume of a cube with side length 4 cm is:
- A. 16 cm³
- B. 32 cm³
- C. 64 cm³
- D. 48 cm³
Answer: C. 64 cm³
Volume of a cube = side × side × side = 4 × 4 × 4 = 64 cm³.
Volume of a cube = side × side × side = 4 × 4 × 4 = 64 cm³.
A cuboid has length 8 cm, breadth 5 cm, and height 3 cm. What is its volume?
- A. 16 cm³
- B. 40 cm³
- C. 120 cm³
- D. 240 cm³
Answer: C. 120 cm³
Volume = l × b × h = 8 × 5 × 3 = 120 cm³.
Volume = l × b × h = 8 × 5 × 3 = 120 cm³.
The radius of a cylinder is doubled, while its height remains the same. What happens to its volume?
- A. It becomes half
- B. It becomes double
- C. It becomes four times
- D. It remains the same
Answer: C. It becomes four times
Volume of a cylinder is πr²h. If the radius doubles, r² becomes 4r², so the volume becomes four times.
Volume of a cylinder is πr²h. If the radius doubles, r² becomes 4r², so the volume becomes four times.
Which solid has the same curved surface area formula as the lateral surface area of a cylinder?
- A. Cube
- B. Cuboid
- C. Cone
- D. Sphere
Answer: C. Cone
The curved surface area of a cylinder and the lateral surface area of a cone both involve curved surfaces, but their formulas are different. Among the given options, cone is the closest solid with a curved surface area concept.
The curved surface area of a cylinder and the lateral surface area of a cone both involve curved surfaces, but their formulas are different. Among the given options, cone is the closest solid with a curved surface area concept.