Chapter Exam

Chapter 14: Mensuration — Online MCQ Test

Q: What is the unit of surface area of a solid?

Answer: B. Square units — Surface area measures the area covered by the outer surface of a solid, so it is expressed in square units.

Q: The volume of a cube with side length 4 cm is:

Answer: C. 64 cm³ — Volume of a cube = side × side × side = 4 × 4 × 4 = 64 cm³.

Q: A cuboid has length 8 cm, breadth 5 cm, and height 3 cm. What is its volume?

Answer: C. 120 cm³ — Volume = l × b × h = 8 × 5 × 3 = 120 cm³.

Q: The radius of a cylinder is doubled, while its height remains the same. What happens to its volume?

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.

Q: Which solid has the same curved surface area formula as the lateral surface area of a cylinder?

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.

MATHS · Samacheer Kalvi 7th · Tamil Nadu State Board

Practice Chapter 14: Mensuration with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 7th MATHS. 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.

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Chapter 14: Mensuration — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 7th MATHS — Chapter 14: Mensuration, with answers and explanations. These are sample questions; the exam has its own separate question set.

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.

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.

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.

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.

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.

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