Get Updates
Subscribe to receive instant notifications for new study materials and important updates.
MCQs For Class 9 Science
Chapter 1 : Matter in Our Surroundings
MCQs For Class 9 Science Chapter 1 Matter in Our Surroundings
Q1. Which of the following is considered as 'Matter'?
A. Love
B. Thought
C. Cold drink
D. Smell of perfume
Correct Answer: C
Q2. What is the SI unit of mass?
A. gram
B. kilogram
C. Newton
D. Pascal
Correct Answer: B
Q3. The physical state of water at 25°C is:
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: B
Q4. Which of the following has the highest kinetic energy?
A. Particles of ice at 0°C
B. Particles of water at 0°C
C. Particles of water at 100°C
D. Particles of steam at 100°C
Correct Answer: D
Q5. The property of flow is unique to fluids. Which one of the following statements is correct?
A. Only gases behave like fluids
B. Gases and solids behave like fluids
C. Gases and liquids behave like fluids
D. Only liquids are fluids
Correct Answer: C
Q6. What is the boiling point of water on the Kelvin scale?
A. 273 K
B. 373 K
C. 100 K
D. 0 K
Correct Answer: B
Q7. Which of the following describes the process of 'Sublimation'?
A. Solid to Liquid
B. Liquid to Gas
C. Solid to Gas directly
D. Gas to Liquid
Correct Answer: C
Q8. Which of the following has the strongest inter-particle forces of attraction?
A. Water
B. Air
C. Iron rod
D. Kerosene
Correct Answer: C
Q9. Dry ice is:
A. Water in solid state
B. Solid Carbon dioxide
C. Liquid Nitrogen
D. Solid Sulphur dioxide
Correct Answer: B
Q10. The process by which a liquid changes into vapour at any temperature below its boiling point is called:
A. Boiling
B. Melting
C. Evaporation
D. Condensation
Correct Answer: C
Q11. During summer, water kept in an earthen pot (matka) becomes cool because of the phenomenon of:
A. Diffusion
B. Transpiration
C. Osmosis
D. Evaporation
Correct Answer: D
Q12. What is the value of 0°C in Kelvin?
A. 0 K
B. 100 K
C. 273.15 K
D. 373 K
Correct Answer: C
Q13. In which of the following, the distance between the molecules of hydrogen gas would increase?
A. Increasing pressure on hydrogen contained in a closed container
B. Some hydrogen gas leaking out of the container
C. Increasing the volume of the container
D. Both B and C
Correct Answer: D
Q14. The rate of evaporation increases with:
A. Increase in humidity
B. Decrease in surface area
C. Increase in wind speed
D. Decrease in temperature
Correct Answer: C
Q15. Which of the following substance will undergo sublimation?
A. Common salt
B. Sugar
C. Camphor
D. Sand
Correct Answer: C
Q16. Kinetic energy of molecules is directly proportional to:
A. Temperature
B. Pressure
C. Volume
D. Humidity
Correct Answer: A
Q17. Which state of matter consists of super energetic and super excited particles in the form of ionized gases?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: D
Q18. The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close. This is due to:
A. High pressure
B. Increased rate of diffusion at high temperature
C. Low density
D. Sublimation
Correct Answer: B
Q19. Latent heat of fusion is the amount of heat energy required to change 1 kg of:
A. Solid into liquid at atmospheric pressure at its melting point
B. Liquid into gas at its boiling point
C. Solid into gas
D. Gas into liquid
Correct Answer: A
Q20. Which of the following is most compressible?
A. Oxygen gas
B. Water
C. Iron
D. Wood
Correct Answer: A
Q21. 100°C is equal to:
A. 373 K
B. 273 K
C. 173 K
D. 473 K
Correct Answer: A
Q22. The state of matter which has a definite shape and a definite volume is:
A. Liquid
B. Solid
C. Gas
D. Plasma
Correct Answer: B
Q23. Which of the following factors does NOT affect the rate of evaporation?
A. Temperature
B. Humidity
C. Surface area
D. Insoluble heavy impurities
Correct Answer: D
Q24. Why do we wear cotton clothes in summer?
A. To look good
B. Cotton is a good absorber of water and helps in evaporation cooling
C. Cotton is very cheap
D. Cotton reflects sunlight
Correct Answer: B
Q25. Diffusion is fastest in:
A. Solids
B. Liquids
C. Gases
D. Semi-solids
Correct Answer: C
Q26. Which of the following is NOT a property of solids?
A. Rigidity
B. Fixed shape
C. High compressibility
D. Definite volume
Correct Answer: C
Q27. The density of water is maximum at:
A. 0°C
B. 100°C
C. 4°C
D. 25°C
Correct Answer: C
Q28. Melting point of ice is:
A. 273.15 K
B. 373 K
C. 0 K
D. 100 K
Correct Answer: A
Q29. What happens to the temperature of a substance during its change of state?
A. Increases
B. Decreases
C. Remains constant
D. First increases then decreases
Correct Answer: C
Q30. 'Bose-Einstein Condensate' is the ________ state of matter.
A. 3rd
B. 4th
C. 5th
D. 2nd
Correct Answer: C
Q31. Which of the following is used in hospitals for oxygen supply?
A. LPG
B. CNG
C. Compressed Oxygen Gas
D. Nitrogen Gas
Correct Answer: C
Q32. Naphthalene balls disappear after some time without leaving any solid residue. This is due to:
A. Evaporation
B. Melting
C. Sublimation
D. Condensation
Correct Answer: C
Q33. A gas can be liquefied by:
A. Increasing temperature and decreasing pressure
B. Decreasing temperature and increasing pressure
C. Increasing both temperature and pressure
D. Decreasing both temperature and pressure
Correct Answer: B
Q34. The space between particles is minimum in:
A. Solids
B. Liquids
C. Gases
D. Vacuums
Correct Answer: A
Q35. Humidity is the measure of:
A. Temperature in air
B. Water vapour in air
C. Oxygen in air
D. Pressure of air
Correct Answer: B
Q36. When we put some acetone (nail polish remover) on our palm, we feel:
A. Hot
B. Cold
C. Nothing
D. Pain
Correct Answer: B
Q37. Which of the following is the standard unit of measuring volume?
A. Litre (L)
B. Cubic metre (m³)
C. Millilitre (mL)
D. Centimetre (cm)
Correct Answer: B
Q38. Convert 300 K into Celsius scale:
A. 27°C
B. 30°C
C. 50°C
D. 100°C
Correct Answer: A
Q39. Steam produces more severe burns than boiling water because:
A. Steam is hotter than boiling water
B. Steam has more latent heat of vaporization
C. Steam is a gas
D. Boiling water is less dense
Correct Answer: B
Q40. The force of attraction between particles of matter is called:
A. Magnetic force
B. Intermolecular force
C. Gravitational force
D. Nuclear force
Correct Answer: B
Q41. Which of the following can be termed as 'fluids'?
A. Wood and Stone
B. Water and Oil
C. Air and Water
D. Both B and C
Correct Answer: D
Q42. On converting 25°C, 38°C and 66°C to Kelvin scale, the correct sequence will be:
A. 298 K, 311 K and 339 K
B. 298 K, 300 K and 338 K
C. 273 K, 278 K and 543 K
D. 298 K, 310 K and 338 K
Correct Answer: A
Q43. Which of the following is NOT matter?
A. Air
B. Water
C. Light
D. Dust
Correct Answer: C
Q44. Breaking of an iron nail is difficult as compared to a piece of chalk. This shows:
A. Iron is bigger than chalk
B. Particles of iron attract each other with greater force
C. Chalk is a liquid
D. Iron has no particles
Correct Answer: B
Q45. The change of a gas into liquid is called:
A. Vaporization
B. Condensation
C. Fusion
D. Solidification
Correct Answer: B
Q46. What is the melting point of ice in Celsius?
A. 100°C
B. 0°C
C. 273°C
D. -273°C
Correct Answer: B
Q47. Increasing the surface area of a liquid ________ the rate of evaporation.
A. Decreases
B. Increases
C. Does not change
D. Stops
Correct Answer: B
Q48. The zig-zag motion of particles in a fluid is called:
A. Linear motion
B. Circular motion
C. Brownian motion
D. Static motion
Correct Answer: C
Q49. Pressure is measured in:
A. Joules
B. Pascals
C. Watts
D. Amperes
Correct Answer: B
Q50. Matter is made up of:
A. Vacuums
B. Particles
C. Large blocks
D. Only air
Correct Answer: B