⬆️ TOP EDUCATION ⬆️
CLASS 9th
SCIENCE CHAPTER= 1
MATTER IN OUR SURROUNDINGS
MCQ WITH ANSWERS
1. Which of the following is not a physical change?
a) Melting of ice
b) Burning of paper
c) Evaporation of water
d) Dissolution of salt in water
Answer: b) Burning of paper
2. The process of conversion of a solid directly into a gas is called:
a) Condensation
b) Sublimation
c) Evaporation
d) Fusion
Answer: b) Sublimation
3. The boiling point of water is:
a) 100°C
b) 0°C
c) 273 K
d) 373 K
Answer: a) 100°C
4. Which of the following is an example of a heterogeneous mixture?
a) Saltwater
b) Air
c) Milk
d) Vinegar
Answer: c) Milk
5. The process of changing a gas into a liquid is called:
a) Melting
b) Freezing
c) Condensation
d) Sublimation
Answer: c) Condensation
6. The SI unit of temperature is:
a) Kelvin (K)
b) Fahrenheit (°F)
c) Celsius (°C)
d) Joule (J)
Answer: a) Kelvin (K)
7. Which of the following has the highest compressibility?
a) Solid
b) Liquid
c) Gas
d) Plasma
Answer: c) Gas
8. Which of the following is not a physical property of matter?
a) Density
b) Boiling point
c) Flammability
d) Conductivity
Answer: c) Flammability
9. The process of conversion of a gas directly into a solid is called:
a) Sublimation
b) Deposition
c) Evaporation
d) Condensation
Answer: b) Deposition
10. Which of the following statements is true about the particles of matter?
a) They are continuously moving.
b) They occupy space.
c) They attract each other.
d) All of the above.
Answer: d) All of the above.
☆Note: These questions are provided for educational purposes and may not cover all the concepts and details of the topic. It is always recommended to refer to your textbook and consult with your teacher for comprehensive learning.
