This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Changes Around Us > Class 6 Science Chapter 6 Changes Around Us – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 6 Changes Around Us Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Burning of a candle is ..... A) Only a physical change. B) Only a chemical change. C) Both physical and chemical change. D) None of these. Show Answer Correct Answer: C) Both physical and chemical change. 2. Paheli's mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a- A) A physical change that cannot be reversed. B) A physical change that can be reversed. C) The chemical change that can be reversed. D) The chemical change that cannot be reversed. Show Answer Correct Answer: B) A physical change that can be reversed. 3. Stretched rubber band to its normal size is a reversible process. Is it true or false? A) True. B) False. C) None. D) None of the above. Show Answer Correct Answer: A) True. 4. When a metal rim is fitted on a wood it is first A) Expanded then contracted. B) Contracted then expanded. C) Melted then cooled. D) None of these. Show Answer Correct Answer: A) Expanded then contracted. 5. Melting of ice is a A) Irreversible. B) Reversible. C) Chemical Change. D) None of these. Show Answer Correct Answer: B) Reversible. 6. Which of these is a result of a physical change? A) A new chemical substance. B) A new odour. C) A new gas. D) A solution. Show Answer Correct Answer: D) A solution. 7. Temperature at which a solid starts melting is called its A) Freezing point. B) Boiling point. C) Slow change. D) Melting point. Show Answer Correct Answer: D) Melting point. 8. What is reversible change A) Permanent change. B) Temporary change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Temporary change. 9. WHICH CHANGE CAUSE SHRINK OF OBJECT A) PHYSICAL CHANGE. B) CHEMICAL CHANGE. C) IRREVERSIBLE. D) NONE OF THESE. Show Answer Correct Answer: D) NONE OF THESE. 10. Is Digestion of food a Chemical Change? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 11. What are the changes that can be reversed called? A) Evaporation. B) Reversible changes. C) Contraction. D) Irreversible changes. Show Answer Correct Answer: B) Reversible changes. 12. If we blow a balloon it also changes its size and shape but can we get back the original size and shape back?? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 13. When increase in temperature, matter: A) Expands. B) Compress. C) Contracts. D) No Change. Show Answer Correct Answer: A) Expands. 14. Woolen yarn to knitted sweater is a reversible process. Find true or false. A) True. B) False. C) None. D) None of the above. Show Answer Correct Answer: A) True. 15. Is the melting of butter a reversible change or Irreversible change? A) The melting of butter is a reversible change. B) The melting of butter is an irreversible change. C) All the above. D) None of the above. Show Answer Correct Answer: A) The melting of butter is a reversible change. 16. Melting of wax is a chemical change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 17. Woolen yarn to a knitted sweater can we reverse it? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 18. An ..... change which cannot be bought back to its original state. A) Reversible. B) Irreversible. C) All the above. D) None of the above. Show Answer Correct Answer: B) Irreversible. 19. WHICH ONE OF THE FOLLOWING IS AN EXAMPLE OF IRREVERSIBLE CHANGE A) Burning of wax. B) Melting of wax. C) BOILING OF WATER. D) MELTING OF ICE. Show Answer Correct Answer: A) Burning of wax. 20. Conversion of solid to liquid by heating is called A) Decantation. B) Condensation. C) Evaporation. D) Cooling. Show Answer Correct Answer: C) Evaporation. 21. Is Cooking a Irreversible Change? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 22. Rusting of iron is an irreversible change A) False. B) True. C) Neither true nor false. D) None of the above. Show Answer Correct Answer: B) True. 23. A student learns that the bending of metallic wire is a reversible change. Why is it considered as a reversible change? A) Because it can be changed back into its previous shape. B) Because the change caused to the metallic wire is permanent. C) Because the change in colour is always considered as a reversible change. D) Because metallic wire changes its material more easily. Show Answer Correct Answer: A) Because it can be changed back into its previous shape. 24. BEST EXPLAINATION OF EXPANSION A) WHICH HAPPEN DURING SUMMER. B) WHICH HAPPEN DURING WINTERS. C) WHICH HAPPENS AT HOT WEATHER. D) NONE OF THESE. Show Answer Correct Answer: C) WHICH HAPPENS AT HOT WEATHER. 25. Which of the following statement is incorrect for a chemical reaction? A) The sound may be produced. B) A colour change may take place. C) Heat may be given out but never absorbed. D) A gas may be evolved. Show Answer Correct Answer: C) Heat may be given out but never absorbed. 26. Changes can occur by their own also. A) Never. B) True. C) Yes, in every case. D) False. Show Answer Correct Answer: B) True. 27. Is sour milk a physical or chemical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 28. A reversible change is a permanent change A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 29. Is growth of Plants a Slow Change? Yes or No? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 30. You have by mistake spilled ink on your notebook. Can this change be reversed? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 31. A physical change ..... A) Changes the physical properties of an object, but does not create a new substance. B) Creates a new substance and cannot be undone. C) All the above. D) None of the above. Show Answer Correct Answer: A) Changes the physical properties of an object, but does not create a new substance. 32. In a ..... chnage, the molecules of the substance remain exactly the same before and after the change. A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 33. Bud to flower, is it reversible? (Yes / no) A) Yes. B) No. C) Don't know. D) None of the above. Show Answer Correct Answer: B) No. 34. Formation of paneer from milk, is the change that A) Can be reversed. B) Can't be reversed. C) Both 1 & 2. D) None of the above. Show Answer Correct Answer: B) Can't be reversed. 35. WHAT IS THE OTHER NAME OF CONTRACTION AND EXPANSION CHANGES A) PERIODIC CHANGES. B) SURROUNDED CHANGES. C) BOTH A AND B. D) NONE OF THESE. Show Answer Correct Answer: B) SURROUNDED CHANGES. 36. What are physical changes? A) A new formation of gas. B) I don't know. C) A change where a new substance has formed. D) A change where no new substance are formed. Show Answer Correct Answer: D) A change where no new substance are formed. 37. Physical changes can be brought about by A) Condensation. B) Cooking. C) Exposing to air. D) Dissolving. E) Raining. Show Answer Correct Answer: D) Dissolving. 38. Cooked food is the A) Chemical change. B) Physical change. C) Both(a)and(b). D) None of these. Show Answer Correct Answer: A) Chemical change. 39. Which of the following is an irreversible change and does not require any heat? A) Melting of wax. B) Burning of coal. C) Rasting. D) Breaking glass bowl. Show Answer Correct Answer: D) Breaking glass bowl. 40. In which of the following changes, did the Water Cycle derives? A) Reversible Change. B) Irreversible Change. C) Undesirable Change. D) Desirable Change. Show Answer Correct Answer: A) Reversible Change. 41. When a liquid X is added to a grey, powdery substance Y, the substance Y slowly sets into a hard mass. A thick paste of substance Y and sand made in liquid X is used for plastering the walls of houses. Name the substance Y. A) Water. B) Cement. C) Plaster of paris. D) None of these. Show Answer Correct Answer: B) Cement. 42. If the picture is drawn using a pencil, then it can be erased, hence is example of A) Reversible Physical Change. B) Irreversible physical change. C) Reversible Chemical Change. D) Reversible Chemical Change. Show Answer Correct Answer: A) Reversible Physical Change. 43. Metal rim expands and fits into the wheel. A) On boiling. B) On cooling. C) On heating. D) All of these. Show Answer Correct Answer: C) On heating. 44. A pan of water boils until it all evaporates into the air. Which of the following properties of the water remains the same after this change? A) Its mass. B) Its temperature. C) Its state. D) Its volume. Show Answer Correct Answer: A) Its mass. 45. Which of these cannot be reversed A) Heating metal. B) Cutting out airplane. C) Folding paper plane. D) None of the above. Show Answer Correct Answer: B) Cutting out airplane. 46. All changes takes place due to some ..... A) Cause. B) Choice. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cause. 47. Chemical change is reversible. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 48. A student placed an iron nail outside in the rain and allowed it remains there for a few days. What will happen to the nail? A) The nail gets shrink. B) The nail gets broken into pieces. C) The nail gets rusted. D) The nail remains the same. Show Answer Correct Answer: C) The nail gets rusted. 49. Rotation of fan blade is a A) Non-periodic change. B) Periodic change. C) Permanent change. D) Undesirable change. Show Answer Correct Answer: B) Periodic change. 50. Wax melts off candle. reversible? A) Yes. B) No. C) Maybe. D) None of the above. Show Answer Correct Answer: B) No. 51. What is the state of ice? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: A) Solid. 52. Do all thermometers contain liquid? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 53. Batter to idli can we reverse it?? A) No. B) Yes. C) All the above. D) None of the above. Show Answer Correct Answer: A) No. 54. Boiling egg is an irreversible changes A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. One of the following plants has two parts which can be eaten as food. This plant is: A) Wheat. B) Maize. C) Mustard. D) Bengal gram. Show Answer Correct Answer: C) Mustard. 56. The solution in which no more solute can be added is called ..... solution. A) Saturated. B) Full. C) Universal. D) Unsaturated. Show Answer Correct Answer: A) Saturated. 57. Ms. Johnson gave all of her students a box of M&M's but one of them was allergic to red dye. What must the student do to make sure that the candy is safe for him to eat? A) Make a new substance which cannot be reversed. B) Make a new substance which is a physical change. C) Separate the mixture which is a physical change. D) Make a new mixture which is a physical change. Show Answer Correct Answer: C) Separate the mixture which is a physical change. 58. The falling of leaves from trees is a reversible change A) True. B) False. C) Neither true nor false. D) None. Show Answer Correct Answer: B) False. 59. Melting of ice is a ..... change A) Fast. B) Chemical. C) Irreversible. D) Reversible. Show Answer Correct Answer: D) Reversible. 60. The process where water changes into a vapour after heating is called A) Evaporation. B) Filtration. C) Condensation. D) Decantation. Show Answer Correct Answer: A) Evaporation. ← PreviousNext →Related QuizzesScience QuizzesClass 6 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 3Class 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books