Last Updated on May 15, 2025 by XAM CONTENT
Understanding the key concepts of Class 9 Science Chapter 2 – Is Matter Around Us Pure? is crucial for exam success. To make your revision easier, we have created chapterwise mcq questions with Answers for class 9 Science based on the latest syllabus and exam pattern. It is a part of MCQ Questions for CBSE Class 9 Science Series.
These multiple-choice questions will help you assess your knowledge, improve accuracy, and boost confidence for your exams. Whether you are preparing for school tests, online tests or competitive exams, these Is Matter Around Us Pure MCQs will strengthen your conceptual clarity.
| Chapter | Is Matter Around Us Pure? |
| Book | Science Textbook for Class 9 |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 9 |
| Subject | Science |
| Useful for | Class 9 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 9 Science Chapterwise MCQ Questions |
MCQ Questions on Is Matter Around Us Pure? Class 9 Science
MCQs
Q1. Which of the following is a pure substance according to scientists?
(a) Milk
(b) Air
(c) Distilled water
(d) Soil
Show Answer
Answer: (c)
Explanation: Distilled water consists of only water molecules and has uniform composition throughout, hence it is a pure substance.
Q2. What type of mixture is soda water?
(a) Solid in gas
(b) Gas in liquid
(c) Liquid in gas
(d) Gas in solid
Show Answer
Answer: (b)
Explanation: Soda water is a solution of carbon dioxide (gas) in water (liquid), hence gas in liquid.
Q3. Which of the following is a heterogeneous mixture?
(a) Vinegar
(b) Air
(c) Soil
(d) Alloy
Show Answer
Answer: (c)
Explanation: Soil consists of different components like minerals, organic matter, etc., and does not have uniform composition.
Q4. What is the main difference between a solution and a suspension?
(a) Particles in a solution settle down
(b) Particles in a suspension are not visible
(c) Particles in a suspension settle down
(d) A solution is a heterogeneous mixture
Show Answer
Answer: (c)
Explanation: In a suspension, particles do not dissolve and settle down when left undisturbed.
Q5. Which of the following will show Tyndall effect?
(a) Salt solution
(b) Copper sulphate solution
(c) Colloidal milk
(d) Vinegar
Show Answer
Answer: (c)
Explanation: Colloids have particles that scatter light, producing the Tyndall effect.
Q6. What is the term used for a mixture where the solute does not dissolve but remains suspended?
(a) Colloid
(b) Solution
(c) Suspension
(d) Alloy
Show Answer
Answer: (c)
Explanation: Suspensions are heterogeneous mixtures where particles remain suspended and settle over time.
Q7. Which component in a solution is present in a larger amount?
(a) Solute
(b) Dispersed phase
(c) Solvent
(d) Residue
Show Answer
Answer: (c)
Explanation: The solvent is the component present in a larger amount and dissolves the solute.
Q8. Which of these mixtures is a colloid?
(a) Sugar solution
(b) Salt water
(c) Milk
(d) Chalk powder in water
Show Answer
Answer: (c)
Explanation: Milk is a colloid as it has particles dispersed in liquid which do not settle down easily.
Q9. Which of the following is not a physical change?
(a) Melting of butter
(b) Boiling of water
(c) Burning of wood
(d) Dissolving salt in water
Show Answer
Answer: (c)
Explanation: Burning of wood is a chemical change because new substances are formed.
Q10. Which technique is used to separate butter from curd?
(a) Filtration
(b) Sedimentation
(c) Centrifugation
(d) Decantation
Show Answer
Answer: (c)
Explanation: Centrifugation is used to separate lighter particles like butter from curd based on density.
Q11. Which of the following is a characteristic property of a compound?
(a) Variable composition
(b) Constituents retain their properties
(c) Fixed ratio of elements
(d) Can be separated by physical methods
Show Answer
Answer: (c)
Explanation: Compounds are made of elements combined in a fixed proportion by mass and have different properties from their constituents.
Q12. Which technique is used to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride?
(a) Filtration
(b) Sublimation
(c) Evaporation
(d) Decantation
Show Answer
Answer: (b)
Explanation: Ammonium chloride sublimes on heating and can be separated from sodium chloride by sublimation.
Q13. Which of these is not a method to separate the components of a mixture?
(a) Filtration
(b) Centrifugation
(c) Combustion
(d) Evaporation
Show Answer
Answer: (c)
Explanation: Combustion is a chemical process, not a physical separation technique.
Q14. Why does a saturated solution become unsaturated on heating?
(a) Solute evaporates
(b) Solubility increases
(c) Volume decreases
(d) Solute decomposes
Show Answer
Answer: (b)
Explanation: Heating increases the solubility of solutes, allowing more to dissolve, hence the solution becomes unsaturated.
Q15. Which of these changes is chemical?
(a) Melting of ice
(b) Rusting of iron
(c) Boiling of water
(d) Dissolving salt in water
Show Answer
Answer: (b)
Explanation: Rusting involves the formation of a new substance (iron oxide) and is a chemical change.
Q16. What is the dispersed phase in foam (like shaving cream)?
(a) Solid
(b) Liquid
(c) Gas
(d) Plasma
Show Answer
Answer: (c)
Explanation: In foam, the dispersed phase is gas and the dispersion medium is liquid.
Q17. Which of the following is an emulsion?
(a) Smoke
(b) Mud
(c) Milk
(d) Jelly
Show Answer
Answer: (c)
Explanation: Milk is an emulsion where liquid fat droplets are dispersed in water.
Q18. Which of these substances shows both physical and chemical changes when a candle burns?
(a) Only chemical change
(b) Only physical change
(c) Both
(d) Neither
Show Answer
Answer: (c)
Explanation: The melting of wax is a physical change while burning is a chemical change.
Q19. Which separation method is used to separate pigments in flower extract?
(a) Filtration
(b) Chromatography
(c) Sublimation
(d) Distillation
Show Answer
Answer: (b)
Explanation: Chromatography is used to separate and analyze components like pigments in mixtures.
Q20. Which of these is a colloidal solution?
(a) Sugar solution
(b) Milk
(c) Salt solution
(d) Air
Show Answer
Answer: (b)
Explanation: Milk is a colloidal mixture of fat particles dispersed in water.
We hope the given mcq questions with Answers for Is Matter Around Us Pure Class 9 helps you in your learning.
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Topics from which mcq questions may be asked
- Mixtures and compounds
- Solutions, suspensions and colloids
- Separation techniques
Purity of matter affects its properties, behavior, and uses in everyday life.
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Frequently Asked Questions (FAQs) on Is Matter Around Us Pure MCQ Questions
Q1: What are MCQ questions in Class 9 Science?
A1: MCQ (Multiple Choice Questions) in Class 9 Science are objective-type questions where students choose the correct answer from four options. They test conceptual understanding, application, and reasoning skills.
Q2: Are these Class 9 Science MCQs based on the latest CBSE syllabus?
A2: Yes, all MCQ questions provided are strictly based on the latest CBSE Class 9 Science syllabus and follow the current NCERT textbook.
Q3: Are Class 9 Science MCQ questions useful for board exam preparation?
A3: Yes, practicing MCQ questions helps build strong conceptual understanding and improves performance in school tests, Olympiads, and board-level competency assessments.
Q4: Do these MCQs include answers and explanations?
A4: Absolutely. Each MCQ question includes the correct answer along with a detailed explanation to help students understand the concept behind the question.
Q5: Where can I find the best MCQ questions for Class 9 Science?
A5: You can find high-quality, CBSE-based MCQ questions for Class 9 Science on trusted educational websites like xamcontent.com. These include chapterwise, topicwise, and competency-based questions aligned with the latest syllabus
Q6: Are there any resources available online for students to practice mcq questions on class 9 science chapter 1 “Is Matter Around Us Pure“ for CBSE exams?
A6: Yes, several educational websites offer mcq questions for CBSE students preparing for science examinations. We also offer a collection of mcq questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. for more mcq, you can also visit Physics Gurukul Website.
