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Class 7 Science Chapter 5 Changes Around Us: Physical &

Class VII Science 📄 Practice Paper Ch 5: Changes Around Us: Physical and Chemical NCERT book: Curiosity
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Class 7 Science – Chapter 5: Changes Around Us: Physical and Chemical

Practice Paper | Session 2026-27

Unique Study Point (USP) | Sumeet Sahu | Indore

Section A – Multiple Choice Questions (MCQ)

  1. Which of the following is a physical change⁣?
    (a) Rusting of iron   (b) Burning of wood   (c) Melting of ice   (d) Cooking of food
  2. Which of the following is a chemical change⁣?
    (a) Cutting of paper   (b) Dissolving sugar in water   (c) Burning of magnesium ribbon   (d) Melting of wax
  3. Rusting of iron is an example of:
    (a) Reversible change   (b) Physical change   (c) Chemical change   (d) Slow physical change
  4. The process of obtaining large crystals of a pure substance from its solution is called "crystallization."
    (a) Evaporation   (b) Crystallisation   (c) Condensation   (d) Sublimation
  5. When carbon dioxide is passed through limewater, it turns:
    (a) Red   (b) Blue   (c) Milky white   (d) Yellow
  6. The minimum temperature at which a substance catches fire is called its "flash point."
    (a) Boiling point   (b) Melting point   (c) Ignition temperature   (d) Flash point
  7. Which of the following changes is ⁣reversible⁣? br/> (a) Burning of paper   (b) Rusting of iron   (c) Melting of ice (d) Ripening of fruit
  8. Iron + Water + Oxygen →
    (a) Iron oxide (rust)   (b) Iron hydroxide   (c) Iron carbonate   (d) No change

Section B – True or False

  1. Dissolving salt in water is a chemical change. (True / False)
  2. Rusting of iron is a slow chemical change. (True / False)
  3. The burning of wood is a reversible change. (True / False)
  4. Crystallization is a method used to purify impure substances. (True / False)
  5. A physical change always results in a new substance. (True / False)

Section C – Very Short Answer Questions

  1. Define physical change. Give one example.
  2. What is a chemical change? Give one example from daily life.
  3. What are the three components of the fire triangle?
  4. Name the product formed when iron reacts with oxygen and water.
  5. What happens when carbon dioxide is passed through lime water?
  6. Give one method to prevent rusting of iron.

Section D—Short Answer Questions

  1. Differentiate between physical and chemical changes. Give two examples of each.
  2. What is combustion? What are the conditions necessary for combustion?
  3. Explain the term 'crystallization' with the help of an example.
  4. Why is rusting of iron considered a chemical change and not a physical change?
  5. Classify the following as physical or chemical changes: (a) Melting of butter (b) Burning of a candle (c) Cutting of cloth (d) Souring of milk

Section E – Application-Based / HOTS Questions

  1. A candle burns and melts. Which part of this process is a physical change and which part is a chemical change? Explain.
  2. When baking soda is mixed with vinegar, bubbles are formed. What type of change is this? How will you confirm the gas produced?
  3. Why do we use sand or a fire blanket to put out a fire, instead of water, in some situations?
  4. Your iron gate is rusting rapidly. Suggest two ways to protect it and explain the science behind each method.

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Sumeet Sahu (14 years of teaching experience), Unique Study Point, Amitesh Nagar, Indore. Free NCERT/CBSE study material for Class VI to X.