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CBSE Class 9 Science Matter In Our Surroundings MCQs
By Karan Singh Bisht
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Updated on 21 Aug 2025, 14:34 IST
Understanding the basics of Matter in Our Surroundings is an important part of Class 9 Science. This chapter explains what matter is, its states, properties, and how it changes under different conditions like temperature and pressure. To make revision easier, we’ve created a set of MCQs for Class 9 Science Chapter 1 that focus on all the key concepts and help students build problem-solving skills.
Our MCQs cover:
- Physical nature and characteristics of matter
- Different states of matter (solid, liquid, and gas)
- Interconversion of states
- Factors affecting changes in state, such as heat and pressure
Practicing these Matter in Our Surroundings Class 9 MCQs helps students quickly revise, test their knowledge, and identify areas for improvement. The questions are based on the latest NCERT and CBSE syllabus, making them perfect for school tests, board exam prep, quizzes, and even competitive exams.
By solving these questions, students not only improve their conceptual clarity but also gain confidence in tackling tricky problems. The class 9 science mcq chapter 1 practice ensures a strong foundation in Chemistry and better exam performance.
Explore our matter in our surroundings mcq set now, keep practicing regularly, and master the fundamentals of matter with ease. Along with this, Infinity Learn also provides NCERT Solutions for Class 9 Science, helping students strengthen their subject knowledge and score higher in exams.
Class 9 Science Chapter 1 MCQs Matter in Our Surroundings
Class 9 students can practice these MCQ-based objective questions prepared as per the latest CBSE syllabus 2025-26. These Class 9 Science Chapter 1 MCQs will help them score well in exams.
Q1. Which of the following cannot be considered a form of matter?
(a) Atom
(b) Water
(c) Humidity
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(d) Electron
Answer: (c) Humidity
Q2. Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?
(a) Latent heat
(b) Lattice energy
(c) Loss of heat
(d) None of these
Answer: (a) Latent heat
Q3. When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
(a) Absorbs some heat
(b) Releases some heat
(c) Neither absorbs nor releases heat
(d) Absorbs 3.34 x 105J/kg of heat
Answer: (b) Releases some heat
Q4. Which of the following statement is correct?
(a) Substances that exist as liquids at room temperature typically have melting and boiling points lower than that of room temperature.
(b) The process in which a substance transitions directly from a solid to a gas state without going through the liquid state is known as sublimation.
(c) To convert a temperature from the Celsius scale to the Kelvin scale, add 273 to the given temperature.
(d) The density of ice is lower than that of water.
Answer: (d) The density of ice is lower than that of water.
Q5. Under which of the following circumstances would the distance between molecules of hydrogen gas increase?
(i) Applying greater pressure to hydrogen within a sealed container.
(ii) Leakage of a portion of the hydrogen gas from the container.
(iii) Expanding the volume of the container holding hydrogen gas.
(iv) Introducing additional hydrogen gas into the container without altering its volume.
(a) (i) and (iii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Answer: (c) (ii) and (iii)
Q6. What is the physical state of matter in which particles have the least kinetic energy?
A) Solid
B) Liquid
C) Gas
D) Plasma
Answer: A) Solid
Q7. Which of the following is a characteristic property of solids?
A) Definite shape and volume
B) Indefinite shape and volume
C) Indefinite shape but definite volume
D) Definite shape but indefinite volume
Answer: A) Definite shape and volume
Q8. What happens to the arrangement of particles when a substance changes from solid to liquid state?
A) Particles come closer together
B) Particles move further apart
C) Particles become arranged in a regular pattern
D) None of the above
Answer: B) Particles move further apart
Q9. Which of the following statements about gases is true?
A) Gases have definite shape and volume
B) Gases have definite shape but indefinite volume
C) Gases have indefinite shape and volume
D) Gases have indefinite shape but definite volume
Answer: C) Gases have indefinite shape and volume
Q10. The process of conversion of a solid into a gas without passing through the liquid state is called
A) Evaporation
B) Condensation
C) Sublimation
D) Fusion
Answer: C) Sublimation
Q11. Which of the following substances does not show the property of sublimation?
A) Iodine
B) Camphor
C) Naphthalene
D) Copper
Answer: D) Copper
Q12. Which of the following is a physical change?
A) Rusting of iron
B) Burning of paper
C) Melting of ice
D) Cooking of food
Answer: C) Melting of ice
Q13. Which of the following has the highest intermolecular force?
A) Solid
B) Liquid
C) Gas
D) Plasma
Answer: A) Solid
Q14. The process of changing a liquid into a gas is called
A) Condensation
B) Evaporation
C) Sublimation
D) Fusion
Answer: B) Evaporation
Q15. Which of the following is not a characteristic property of matter?
A) Mass
B) Volume
C) Color
D) Density
Answer: C) Color
Q16. When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment?
(a) Air is heavier than bromine
(b) Both bromine and air have the same density
(c) Bromine is heavier than air
(d) Bromine cannot be heavier than air because it is going upwards against gravity
Answer: (c) Bromine is heavier than air
Q17. A form of matter has no fixed shape but it has a fixed volume. An example of this matter is
(a) Krypton
(b) Kerosene
(c) Carbon steel
(d) Carbon dioxide
Answer: (b) Kerosene
Q18. What happens to the temperature of water as it boils when heat is consistently applied by a burner?
(a) Rises very slowly
(b) Rises rapidly until steam is produced
(c) First rises and then becomes constant
(d) Does not rise at all
Answer: (d) Does not rise at all
Q19. Which one of the following set of phenomena would increase on raising the temperature?
(a) Diffusion, evaporation, compression of gases
(b) Evaporation, compression of gases, solubility
(c) Evaporation, diffusion, expansion of gases
(d) Evaporation, solubility, diffusion, compression of gases
Answer: (c) Evaporation, diffusion, expansion of gases
Q20. When converting 308 K, 329 K, and 391 K to the Celsius scale, what is the correct sequence of temperatures?
(a) 33°C, 56°C and 118°C
(b) 35°C, 56°C and 119°C
(c) 35°C, 56°C and 118°C
(d) 56°, 119°C and 35° C
Answer: (c) 35°C, 56°C and 118°C
FAQs on matter in our surroundings class 9 MCQs
What are the most important MCQ topics in Matter in Our Surroundings?
States of matter (solid/liquid/gas), characteristics of particles, diffusion, evaporation and factors affecting it (surface area, temperature, wind, humidity), interconversion of states, latent heat (fusion/vaporization), and Kelvin–Celsius conversions.
What types of MCQs are usually asked from this chapter?
Direct concept MCQs (definitions/properties), assertion–reason, statement–correct/incorrect, application-based (real-life evaporation/cooling), unit conversion (°C ↔ K), and simple numericals on temperature change or latent heat.
How do I quickly solve evaporation/cooling-effect MCQs?
Recall that evaporation increases with higher temperature, larger surface area, lower humidity, and more wind. Evaporation causes cooling due to energy taken as latent heat from the surroundings (skin/surface), lowering temperature.
What formulas and conversions should I memorize for MCQs?
- Temperature: K = °C + 273 (approx.).
- Latent heat (conceptual): Q = m × L (used qualitatively at Class 9 level).
- Interconversion: Melting/freezing ↔ latent heat of fusion; boiling/condensation ↔ latent heat of vaporization.