Chapter 3: Matter Around Us — Online MCQ Test

SCIENCE · Samacheer Kalvi 7th · Tamil Nadu State Board
Practice Chapter 3: Matter Around Us with a free chapter-wise online MCQ test. This chapter covers: Solid liquid gas properties Study of states of matter their properties and physical changes. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 3: Matter Around Us — Important Questions & Answers

Which of the following is a solid?

A. Milk
B. Stone
C. Air
D. Water vapor

Answer: B. Stone
Stone has a fixed shape and fixed volume, which are properties of solids.

Liquids have a fixed ______ but no fixed shape.

A. mass
B. volume
C. color
D. temperature

Answer: B. volume
A liquid can take the shape of its container, but its volume remains the same.

Water changes into water vapor on heating. This process is called:

A. Condensation
B. Evaporation
C. Freezing
D. Melting

Answer: B. Evaporation
Evaporation is the change of liquid into gas due to heating.

Which of the following best explains why a solid has a fixed shape?

A. Its particles are far apart
B. Its particles are loosely held
C. Its particles are closely packed and strongly attracted
D. Its particles can move freely in all directions

Answer: C. Its particles are closely packed and strongly attracted
In solids, particles are tightly packed and held strongly, so the shape remains fixed.

Which statement is true about matter in all three states?

A. Only solids have mass
B. Only gases occupy space
C. All matter has mass and occupies space
D. Only liquids have volume

Answer: C. All matter has mass and occupies space
Matter is anything that has mass and occupies space, whether it is solid, liquid, or gas.