Last Updated on May 7, 2025 by XAM CONTENT
Understanding the key concepts of Class 7 Science Chapter 5 – Changes Around Us: Physical and Chemical is crucial for exam success. To make your revision easier, we have created chapterwise mcq questions with Answers for class 7 Science based on the latest syllabus and exam pattern. It is a part of MCQ Questions for CBSE Class 7 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 Changes Around Us: Physical and Chemical MCQs will strengthen your conceptual clarity.
| Chapter | Changes Around Us: Physical and Chemical |
| Book | Curiosity |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 7 |
| Subject | Science |
| Useful for | Class 7 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 7 Science Chapterwise MCQ Questions |
MCQ Questions on Changes Around Us: Physical and Chemical Class 7 Science – Curiosity
MCQs
Q1. Which of the following is a physical change?
(a) Burning of paper
(b) Rusting of iron
(c) Melting of ice
(d) Cooking of rice
Show Answer
Answer: (c)
Explanation: Melting of ice is a physical change as no new substance is formed.
Q2. Which of the following changes is irreversible?
(a) Folding a paper
(b) Melting wax
(c) Making curd from milk
(d) Dissolving sugar in water
Show Answer
Answer: (c)
Explanation: Making curd is a chemical change and cannot be reversed back to milk.
Q3. What is formed when carbon dioxide is passed through lime water?
(a) Oxygen
(b) Water
(c) Calcium carbonate
(d) Baking soda
Show Answer
Answer: (c)
Explanation: Carbon dioxide reacts with lime water to form calcium carbonate, which turns it milky.
Q4. Which of these is a chemical change?
(a) Boiling of water
(b) Freezing of water
(c) Evaporation of water
(d) Burning of magnesium ribbon
Show Answer
Answer: (d)
Explanation: Burning magnesium forms magnesium oxide, a new substance, indicating a chemical change.
Q5. The turning of milk into curd is a:
(a) Physical change
(b) Reversible change
(c) Chemical change
(d) Change in state
Show Answer
Answer: (c)
Explanation: Curdling of milk results in a new substance and is an irreversible chemical change.
Q6. Which of the following supports combustion?
(a) Nitrogen
(b) Oxygen
(c) Hydrogen
(d) Carbon dioxide
Show Answer
Answer: (b)
Explanation: Oxygen is essential for combustion to take place.
Q7. What kind of change occurs when paper is burnt?
(a) Physical change
(b) Reversible change
(c) Both physical and chemical
(d) Chemical change
Show Answer
Answer: (d)
Explanation: Burning paper forms ash and releases gases, making it a chemical change.
Q8. Which is not necessary for combustion?
(a) Fuel
(b) Oxygen
(c) Water
(d) Heat
Show Answer
Answer: (c)
Explanation: Water does not support combustion; it extinguishes fire.
Q9. What kind of change is observed when a candle is lit?
(a) Physical
(b) Chemical
(c) Both
(d) None
Show Answer
Answer: (c)
Explanation: Melting and vaporising wax are physical changes; burning is chemical.
Q10. Which gas turns lime water milky?
(a) Oxygen
(b) Hydrogen
(c) Nitrogen
(d) Carbon dioxide
Show Answer
Answer: (d)
Explanation: Carbon dioxide reacts with lime water to form calcium carbonate, turning it milky.
Q11. Which of these is a sign of chemical change?
(a) Change in shape
(b) Formation of new substance
(c) Change in size
(d) Temporary colour change
Show Answer
Answer: (b)
Explanation: The formation of a new substance is a hallmark of a chemical change.
Q12. Which of these is a desirable chemical change?
(a) Rusting
(b) Decay of food
(c) Cooking of food
(d) Burning of clothes
Show Answer
Answer: (c)
Explanation: Cooking food produces desirable new substances that are edible and tasty.
Q13. Chopping vegetables is what type of change?
(a) Chemical
(b) Physical
(c) Both
(d) Biological
Show Answer
Answer: (b)
Explanation: Chopping only changes the shape, not the substance – hence it’s physical.
Q14. What change occurs during the rusting of iron?
(a) Physical
(b) Reversible
(c) Chemical
(d) Periodic
Show Answer
Answer: (c)
Explanation: Rusting involves a chemical reaction forming iron oxide.
Q15. The formation of soil from rocks is an example of:
(a) Reversible physical change
(b) Chemical change only
(c) Both physical and chemical changes
(d) Only biological change
Show Answer
Answer: (c)
Explanation: Weathering of rocks involves both physical breaking and chemical alteration.
Q16. Which of these shows a reversible physical change?
(a) Baking a cake
(b) Tearing a paper
(c) Freezing water
(d) Cooking rice
Show Answer
Answer: (c)
Explanation: Freezing and melting of water are reversible physical changes.
Q17. Which change involves the release of heat and light?
(a) Boiling water
(b) Freezing water
(c) Combustion
(d) Dissolving sugar
Show Answer
Answer: (c)
Explanation: Combustion reactions release heat and light energy.
Q18. Which of these is NOT a combustion product?
(a) Carbon dioxide
(b) Oxygen
(c) Water vapour
(d) Heat
Show Answer
Answer: (b)
Explanation: Oxygen is required for combustion; it is not a product.
Q19. What is the minimum temperature required to start combustion called?
(a) Flash point
(b) Melting point
(c) Ignition temperature
(d) Combustion limit
Show Answer
Answer: (c)
Explanation: Ignition temperature is the minimum temperature at which a substance catches fire.
Q20. Which one of the following processes shows both physical and chemical change?
(a) Melting of wax
(b) Cutting vegetables
(c) Burning of candle
(d) Freezing of juice
Show Answer
Answer: (c)
Explanation: Melting wax is physical, but its vapour burning is chemical, hence both changes occur.
We hope the given mcq questions with Answers for Changes Around Us: Physical and Chemical Class 7 helps you in your learning.
Quiz: Changes Around Us – Physical and Chemical
Click the button below to start the quiz on Chapter 5.
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Topics from which mcq questions may be asked
- Physical changes
- Chemical changes
- Examples of changes
Change is the only constant in the physical and chemical world.
Frequently Asked Questions (FAQs) on Changes Around Us: Physical and Chemical MCQ Questions
Q1: Why should I practice Class 7 Science Chapter 5 MCQs?
A1: Practicing MCQs helps in quick revision, improves problem-solving speed, and enhances conceptual understanding of important topics in Class 7 Science.
Q2: Are these Class 7 Science MCQs based on the latest syllabus?
A2: Yes, all the MCQs are designed as per the latest CBSE syllabus and exam pattern to help students prepare effectively.
Q3: Where can I find more MCQs for Class 7 Science?
A3: You can find more chapter-wise MCQs on our website. These are designed to cover important concepts and prepare you for exams.
Q4: Are the answers provided for all MCQs?
A4: Yes, each MCQ is accompanied by the correct answer and explanations to help students understand and learn better.
Q5: How can I improve my performance in Class 7 Science MCQs?
A5: To improve your performance, practice regularly, revise key concepts, and take mock tests to assess your knowledge.
Q6: Do these MCQs help in school exams?
A6: Yes, these MCQs are aligned with school exam patterns and help in scoring well by strengthening conceptual clarity.
Q7: Can I download these MCQs for offline practice?
A7: Yes, you can download or print these MCQs for convenient offline practice.
