This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 6 Changes Around Us – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 6 Changes Around Us Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Reversible change is the change in which the change is temporary A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 2. The changes that occur over a long period of time are called A) Organism. B) Slow changes. C) Fruit. D) Growth. Show Answer Correct Answer: B) Slow changes. 3. Breaking a glass is what kind of change? A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 4. Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel, because on heating the iron rim- A) Expands and fits onto the wooden wheel. B) Contracts and fits onto the wooden wheel. C) No change in the size takes place. D) Expands first, then on cooling contracts and fits onto the wooden wheel. Show Answer Correct Answer: D) Expands first, then on cooling contracts and fits onto the wooden wheel. 5. If we burn a candle, the height of a candle A) Decreased. B) Increased. C) Remain same. D) None. Show Answer Correct Answer: A) Decreased. 6. Batter to idli, is this change is reversible?(yes or no) A) No. B) Yes. C) Don't know. D) None of the above. Show Answer Correct Answer: A) No. 7. What do you think Irreversible change is? A) Non-permanent change. B) Permanent change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Permanent change. 8. State whether yes or no.-Can the change in the length of the candle that occurred during burning, be reversed? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 9. Which of the following changes cannot be reversed A) Milk to paneer. B) Cold milk to hot milk. C) Yarn to knitted sweater. D) Wet clothes to dry clothes. Show Answer Correct Answer: A) Milk to paneer. 10. The iron blade of a soil digging tool is fixed to a wooden handle by the process of ..... A) Melting. B) Contraction. C) Expansion. D) Freezing. Show Answer Correct Answer: C) Expansion. 11. We can change cold milk to hot milk, is this reversible or not? A) No. B) Yes. C) Don't know. D) None of the above. Show Answer Correct Answer: B) Yes. 12. Physical changes are ..... A) Always reversible. B) Always irriversible. C) Sometimes irreversible but most of the time, reversible. D) Some times reversible but most of the time, irreversible. Show Answer Correct Answer: C) Sometimes irreversible but most of the time, reversible. 13. Heat is a form of ..... A) HOT AND HEATNESS. B) ENERGY. C) HEAT SUBSTANCE. D) None of the above. Show Answer Correct Answer: B) ENERGY. 14. If we boil some milk and add a small amount of lemon juice to it. The milk will turn into a curdly substance that is cheese (name the change) A) Slow change. B) Reversible change. C) Fast change. D) Physical change. Show Answer Correct Answer: C) Fast change. 15. Ripening of a mango is a ..... change A) Reversible. B) Non-reversible. C) All the above. D) None of the above. Show Answer Correct Answer: B) Non-reversible. 16. Melting of ice is an example of ..... A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical change. 17. Examples of Slow changes A) Heating of water. B) Burning of crackers. C) Rusting of iron. D) Cutting of hair. Show Answer Correct Answer: C) Rusting of iron. 18. The effects of the changes are A) Change in size. B) Change in shape. C) Change in colour or taste. D) All of these. Show Answer Correct Answer: D) All of these. 19. Growth in size of the body of an organism is a A) Physical and permanent change. B) Physical and temporary change. C) Chemical and temporary change. D) Chemical and permanent change. Show Answer Correct Answer: A) Physical and permanent change. 20. Setting of curd from milk is ..... change A) Slow, chemical and irreversible. B) Fast, physical and reversible. C) Slow, physical and reversible. D) Slow, physical and reversible. Show Answer Correct Answer: A) Slow, chemical and irreversible. 21. When cooked food is left outside at room temperature, it gets spoilt. This is an example of ..... change. A) Reversible. B) Physical only. C) Chemical only. D) Irreversible. Show Answer Correct Answer: D) Irreversible. 22. Boiling an egg is a A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 23. When objects absorb heat, the particles ..... A) Gain energy and vibrate at fixed position. B) Gain energy and increase in size. C) Gain energy and move slower. D) Gain energy and move faster. Show Answer Correct Answer: D) Gain energy and move faster. 24. A potter shapes pots out of clay (Process 1). He then bakes the pots in an oven (Process 2). Which of the following statements is correct? A) Process 1 is a reversible, physical change while process 2 is an irreversible, physical change. B) Process 1 is an irreversible, physical change while process 2 is an irreversible, chemical change. C) Process 1 is a reversible, physical change while process 2 is an irreversible, chemical change. D) None of these. Show Answer Correct Answer: C) Process 1 is a reversible, physical change while process 2 is an irreversible, chemical change. 25. When heat is removed, vibration of atoms A) Increase. B) Decrease. C) No change. D) None of the above. Show Answer Correct Answer: B) Decrease. ← PreviousNext →Related QuizzesClass 6 Science Chapter 6 Changes Around Us Quiz 1Class 6 Science Chapter 6 Changes Around Us Quiz 2Class 6 Science Chapter 6 Changes Around Us Quiz 4Class 6 Science Chapter 6 Changes Around Us Quiz 5Class 6 Science Chapter 6 Changes Around Us Quiz 6Class 6 Science Chapter 6 Changes Around Us Quiz 7Class 6 Science Chapter 6 Changes Around Us Quiz 8Class 6 Science Chapter 6 Changes Around Us Quiz 9Class 6 Science Chapter 6 Changes Around Us Quiz 10Class 6 Science Chapter 6 Changes Around Us Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books