Class 9th · Science

Matter In Our Surroundings – Notes, MCQs, Quiz & Worksheet

Overview

What is Matter In Our Surroundings?

Matter In Our Surroundings is a key chapter in the Class 9th Science syllabus. In this chapter you'll build a clear understanding of its core ideas, learn how they connect to one another, and see how they apply to questions you'll face in your exams. The goal is not just to memorise, but to understand — so you can solve any question, however it's framed.

Along the way you'll come across important definitions, concepts and problem-solving methods that form the foundation for later chapters and higher classes. Many real-life situations and other topics rely on the ideas introduced here, which is exactly why examiners give this chapter steady weightage.

Use the notes below to learn the concepts, the MCQs and quiz to test yourself, and the worksheet and important questions to revise thoroughly before your exam.

Exam relevance

Matter In Our Surroundings carries steady weightage in Class 9th exams. Practising its MCQs and important questions is one of the fastest ways to secure marks from this chapter.

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MCQ Practice

Practice MCQs – Matter In Our Surroundings

Attempt these multiple-choice questions, then reveal the answer to check yourself.

Q1.Which of the following is the smallest unit of matter?
A.Atom
B.Particle
C.Element
D.Molecule
Answer: Atom
Q2.The temperature at which a substance changes from a liquid to a gas is called:
A.Boiling point
B.Melting point
C.Freezing point
D.Condensation point
Answer: Boiling point
Q3.Which of the following conditions is most favourable for converting gas into liquid?
A.High pressure, low temperature
B.Low pressure, low temperature
C.Low pressure, high temperature
D.High pressure, high temperature
Answer: High pressure, low temperature
Q4.The temperature at which water boils is:
A.0°C
B.50°C
C.100°C
D.212°C
Answer: 100°C
Q5.Which of the following is not a state of matter?
A.Solid
B.Liquid
C.Gas
D.Plasma
Answer: Plasma
Q6.Which of the following phenomena would increase on rising 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: Evaporation, diffusion, expansion of gases
Q7.A form of matter that has no fixed shape but has a fixed volume. An example of this form of matter is ———————
A.carbon dioxide
B.ice
C.water vapor
D.kerosene
Answer: kerosene
Q8.The boiling point of water at sea level is ———————
A.0℃
B.373 K
C.273 K
D.273℃
Answer: 373 K
Q9.Which state of matter has a definite volume but no definite shape?
A.Solid
B.Liquid
C.Gas
D.Plasma
Answer: Liquid
Q10.When ice melts, its temperature:
A.Increases
B.Decreases
C.Fluctuates
D.Remains constant
Answer: Remains constant
Q11.The process of changing a substance from a solid to a liquid state is called:
A.Freezing
B.Evaporation
C.Condensation
D.Melting
Answer: Melting
Q12.In all the three states of water, (i.e. ice, liquid and vapour) chemical composition of water
A.is very different
B.remains same
C.sometimes same and sometimes different
D.none of the above
Answer: remains same
Q13.Which change of state is an example of sublimation?
A.Water evaporating to steam
B.Steam condensing to water
C.Iodine changing directly from solid to gas
D.Ice melting to water
Answer: Iodine changing directly from solid to gas
Q14.Matter exists in how many states?
A.One
B.Two
C.Three
D.Four
Answer: Three
Q15.The force of attraction between particles is strongest in:
A.Solids
B.Liquids
C.Gas
D.None of the above
Answer: Solids
Q16.The solid which undergoes sublimation is ——————
A.ice cube
B.Naphthalene
C.sodium chloride
D.potassium chloride
Answer: Naphthalene
Q17.Which one of the following has the highest compressibility?
A.Gas
B.Solid
C.Liquid
D.None of these
Answer: Gas
Q18.The process in which solid is directly converted to vapours state is called —————
A.vapourisation
B.sublimation
C.condensation
D.solidification
Answer: sublimation
Q19.The property of a solid which prevents it from changing shape easily is called:
A.Fluidity
B.Rigidity
C.Compressibility
D.Viscosity
Answer: Rigidity
Q20.Which of the following is correct about particles in matter?
A.Particles are in constant motion
B.Particles have space between them
C.Particles attract each other
D.All of the above
Answer: All of the above
Quiz

Take a Matter In Our Surroundings Quiz

A short, timed quiz with instant scoring — perfect for checking how well you know the chapter.

Matter In Our Surroundings Quiz

Attempt a 10–20 question quiz on Matter In Our Surroundings. Try to finish within 15 minutes, get instant scoring, and see which topics need more revision.

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Quiz Test

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Quick Revision

Matter In Our Surroundings – Quick Revision Notes

A one-page recap to revise the whole chapter in minutes.

  • Matter In Our Surroundings is part of the Class 9th Science syllabus and carries steady exam weightage.
  • Re-read all formulas, laws and definitions from this chapter.
  • Re-attempt the MCQs you got wrong and solve one worksheet.
  • Finish with a short quiz to confirm you remember everything.
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Educational intent

Created to help Class 9th students learn and revise Matter In Our Surroundings from Science using notes, practice questions and free study tools.

Accuracy & learning-first

Our content is prepared and reviewed by experienced educators and kept aligned with the latest NCERT / CBSE syllabus and exam pattern.

Student-focused note

These resources support your school learning and self-study. Always cross-check with your prescribed textbook and your teacher's guidance for board exams.