Properties of Matter Quiz - CBSE Class 9 Science

Free practice quiz: Properties of Matter (CBSE Class 9 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 9 Science practice quiz has 20 multiple-choice questions on Properties of Matter, and 20 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. What is the boiling point of water under normal atmospheric pressure?

   1. 100°C
   2. 90°C
   3. 50°C
   4. 0°C
   Show answer

   Answer: A. 100°C

   Under normal atmospheric pressure, water boils at 100°C, which is a standard property of matter.

2. Why does ice float on water?

   1. Ice is colder than water
   2. Ice is denser than water
   3. Ice is less dense than water
   4. Ice is drier than water
   Show answer

   Answer: C. Ice is less dense than water

   Ice floats on water because it is less dense than liquid water. The molecular structure of ice traps air, making it light enough to float.

3. Which property of matter is observed when a metal changes color upon heating?

   1. Luster
   2. Sonority
   3. Thermal conductivity
   4. Color change
   Show answer

   Answer: D. Color change

   The color change in metals upon heating is a physical property that indicates a change in energy levels.

4. Why does a balloon filled with helium rise in air?

   1. Helium is heavier than air
   2. Helium is lighter than air
   3. Helium is denser than air
   4. Helium is cooler than air
   Show answer

   Answer: B. Helium is lighter than air

   Helium is less dense and lighter than the surrounding air, causing the balloon to rise.

5. At what temperature is an object said to be in thermal equilibrium with its surroundings?

   1. Equilibrium temperature
   2. Room temperature
   3. Absolute zero
   4. Melting point
   Show answer

   Answer: A. Equilibrium temperature

   An object is in thermal equilibrium when its temperature equals the temperature of its surroundings, meaning no net heat transfer occurs.

More questions in this quiz

Answers and explanations are in the full quiz.

1. Which is the best method to separate a mixture of sand and salt?
2. Which of the following states of matter has a definite shape and volume?
3. What is the process called when a solid changes directly into a gas?
4. What property of liquids allows insects to walk on water?
5. How does temperature affect the viscosity of a liquid?
6. What occurs during the process of condensation?
7. What is the term for the amount of matter present in a given volume?
8. When a liquid turns into a gas, what is this process called?
9. What is the melting point of ice?
10. What type of bond is responsible for the high boiling point of water?
11. How does pressure affect the boiling point of a liquid?
12. What happens to the density of a gas when it is compressed?
13. In a closed system, what remains constant according to the law of conservation of mass?
14. Which element has the highest density at room temperature?
15. What happens to the size of particles in a suspension when it is filtered?

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