This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Changes Around Us > Class 6 Science Chapter 6 Changes Around Us – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 6 Changes Around Us Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following changes is caused by exerting pressure or force: A) Blooming of flowers. B) Stretching of a rubber band. C) Cooking of food. D) Rusting of iron. Show Answer Correct Answer: B) Stretching of a rubber band. 2. Which of the following is a human-made change? A) Flowering in plants. B) Weaving of cloth. C) Change of seasons. D) Ripening of fruits. Show Answer Correct Answer: B) Weaving of cloth. 3. Volcanoes are ..... A) A fast change to the earth's surface. B) A slow change to the earth's surface. C) Never under water. D) None of the above. Show Answer Correct Answer: A) A fast change to the earth's surface. 4. The 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) Contracts and fits onto the wooden wheel. 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 a new substance is formed would this be a physical or chemical change? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 6. Reversible changes can change back to its original form ..... A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. Changing liquid to a gas is called A) Condensation. B) Melting. C) Evaporation. D) Freezing. Show Answer Correct Answer: C) Evaporation. 8. Blowing air in a balloon is A) Physical change. B) Irreversible change. C) Chemical change. D) Periodic change. Show Answer Correct Answer: A) Physical change. 9. You fill the balloon with too much air. It bursts. Is it reversible? A) Yes. B) No. C) Maybe. D) None of the above. Show Answer Correct Answer: B) No. 10. Is condensation irreversible changes A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. Changing in physical properties of a material is called A) Chemical Change. B) Physical Change. C) Fast Change. D) Slow Change. Show Answer Correct Answer: B) Physical Change. 12. Metals ..... on heating and ..... on cooling A) Metals expand on heating and contracts on cooling. B) Metals contracts on heating and expands on cooling. C) All the above. D) None of the above. Show Answer Correct Answer: A) Metals expand on heating and contracts on cooling. 13. What is sublimation A) Gas-Liquid. B) Gas-Solid. C) Liquid-Solid. D) Solid-Gas. Show Answer Correct Answer: D) Solid-Gas. 14. Which of the following is a sign that a chemical reaction has occurred? A) Formation of a gas. B) Change in shape. C) Melting. D) Dissolving. Show Answer Correct Answer: A) Formation of a gas. 15. Which of these is an inter vertebrate? A) Humans. B) Cobra. C) Snail. D) Frog. Show Answer Correct Answer: C) Snail. 16. Burning wax brings about changes in the molecules of wax. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Irreversible 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: B) FALSE. 18. What is happening in the statement below?The ice cube melted. A) Matter is changing from a liquid to a solid. B) Matter is changing from a liquid to a gas. C) Matter is changing from a solid to a liquid. D) Matter is changing from a gas to a liquid. Show Answer Correct Answer: C) Matter is changing from a solid to a liquid. 19. Heating metal cannot be reversed (T/F) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 20. Which of the following is an irreversible change that takes place when heat is provided to the system? A) Transformation of water into steam. B) The expansion of iron. C) Melting of ice. D) Burning of coal. Show Answer Correct Answer: D) Burning of coal. 21. An irreversible change is one in which ..... A) The original substances can be obtained. B) The original substance cannot be obtained. C) The original substances can sometimes be obtained. D) No new substance is formed. Show Answer Correct Answer: B) The original substance cannot be obtained. 22. Digestion of food is a A) Physical change. B) Temporary change. C) Chemical change. D) Periodic change. Show Answer Correct Answer: C) Chemical change. 23. Which of the following is/are natural change(s)? A) Formation of glaciers. B) Weathering of rocks. C) Ripening of fruits. D) All of these. Show Answer Correct Answer: D) All of these. 24. Cow dung to biogas, is this reversible process? A) No. B) Yes. C) Don't know. D) None of the above. Show Answer Correct Answer: A) No. 25. An ..... change cannot be undone because the change is permanent and generally creates a new substance. A) Reversible. B) Irreversible. C) All the above. D) None of the above. Show Answer Correct Answer: B) Irreversible. 26. In a ..... change, a new substance is formed example conversion of milk to curd. A) Physical. B) Chemical. C) Reversible. D) None of the above. Show Answer Correct Answer: B) Chemical. 27. Rust is reddish-brown substance formed due to A) Metal react to iron. B) Iron react to metal. C) Metal react to moister and oxygen. D) Iron react to moister and oxygen. Show Answer Correct Answer: D) Iron react to moister and oxygen. 28. Rolling of chapathi and baking oh chapathi are the changes that, A) Can be reversed. B) Cannot be reversed. C) Can be reversed and cannot be reversed. D) Cannot be reversed and can be reversed. Show Answer Correct Answer: C) Can be reversed and cannot be reversed. 29. Deforestation is an irreversible or reversible change? A) Reversible Change. B) Irreversible Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Irreversible Change. 30. Is heating sugar to make caramel a physical or chemical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 31. Reversible changes also known as A) Non periodic change. B) Chemical change. C) Physical change. D) Periodic change. Show Answer Correct Answer: C) Physical change. 32. How many type of changes are there A) 2 type-chemical change, Physical change. B) 3 type-chemical changes, physical change, reversibblechange. C) 4 type-chemical change, physical change, reversibblechange, ireverssiblechange. D) None of the above. Show Answer Correct Answer: C) 4 type-chemical change, physical change, reversibblechange, ireverssiblechange. 33. An example of irreversible change is: A) Melting of chocolates. B) Cooking of food. C) Heating of water. D) Dissolving salt in water. Show Answer Correct Answer: B) Cooking of food. 34. What type of change is the "rusting of iron" A) Chemical, reversible. B) Chemical, irreversible. C) Physical, reversible. D) Physical, irreversible. Show Answer Correct Answer: B) Chemical, irreversible. 35. Of the changes below, which is NOT an irreversible change: A) Cooking. B) Melting. C) Burning. D) Rusting. Show Answer Correct Answer: B) Melting. 36. Changing solid to a gas is called A) Freezing. B) Condensation. C) Evaporation. D) Sublimation. Show Answer Correct Answer: D) Sublimation. 37. Which of the following is revesible changes? A) Paper burning. B) Roti. C) Chapati. D) Paper folding. Show Answer Correct Answer: D) Paper folding. 38. CURDLING MILK IS A) REVERSIBLE CHANGE. B) FAST CHANGE. C) SLOW CHANGE. D) NO CHANGE. Show Answer Correct Answer: C) SLOW CHANGE. 39. The expanding of matter when it is heated is known as A) Condensation. B) Thermal expansion. C) Evaporation. D) Vaporization. Show Answer Correct Answer: B) Thermal expansion. 40. Ice cream to molten ice cream, is this change reversible?( yes / no) A) No. B) Yes. C) Don't know. D) None of the above. Show Answer Correct Answer: B) Yes. 41. When iron is heated it A) Contracts. B) Expands. C) Dissolves. D) Evaporates. Show Answer Correct Answer: B) Expands. 42. Burning a log is a chemical change A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. What is an exothermic change A) A change that can be reversed. B) A change in which heat is absorbed. C) A change in which heat is released. D) A change that is useful. Show Answer Correct Answer: C) A change in which heat is released. 44. What is the correct meaning of Galvanization A) Mainly coating Aluminium with its own oxide to make it more durable. B) Coating a metal with a layer of zinc to prevent corrosion or rusting. C) Mainly coating Aluminium with zinc to prevent corrosion or rusting. D) Coating metal with its own oxide to make it more durable. Show Answer Correct Answer: B) Coating a metal with a layer of zinc to prevent corrosion or rusting. 45. When the iron blade is on the wooden handle it is fitted A) By boiling then cooling. B) By freezing. C) By cooling then heating. D) By heating then cooling. Show Answer Correct Answer: D) By heating then cooling. 46. WHICH CHANGE CAUSES RAIN A) EVAPORATION. B) CONDENSATION. C) BOTH A AND B. D) NONE. Show Answer Correct Answer: C) BOTH A AND B. 47. A balloon changes its size and shape on blowing air into it. Will it gain its previous shape and size if air is blown out. A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 48. Bursting of balloon is a slow change. A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 49. If we cut a paper we can stick it back then why is it an Irreversible Change? A) Because If we keep it anywhere It looks like the original form. B) The paper will turn back automatically. C) It does not change exactly like before. D) Wrong it is Reversible. Show Answer Correct Answer: C) It does not change exactly like before. 50. Irreversible changes cannot go backwards A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 51. Every change has a cause. true or false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 52. The process of converting solid directly into gas A) Evaporation. B) Melting. C) Sublimation. D) Condensation. Show Answer Correct Answer: C) Sublimation. 53. Solubility of solutes with a decrease in temperature A) Increase. B) Decreases. C) Remains same. D) None of the above. Show Answer Correct Answer: B) Decreases. 54. Baking of chapathi is a change that: A) Can be reversed. B) Cannot be reversed. C) I don't know. D) None of the above. Show Answer Correct Answer: B) Cannot be reversed. 55. Which of the followings are Non-Flowering plants. A) Mushroom. B) GRASS. C) Morning Glory. D) Mango tree. Show Answer Correct Answer: A) Mushroom. 56. The following change can not be reversed- A) Paper aeroplane to a paper. B) Fully blown balloon to the balloon. C) Baked roti to the ball of dough. D) Rolled out roti to a ball of dough. Show Answer Correct Answer: C) Baked roti to the ball of dough. 57. What type of change is the lighting of a bulb? A) Reversible change. B) Irreversible change. C) Chemical change. D) None of these. Show Answer Correct Answer: A) Reversible change. 58. Why there are always 5mm gape between the railtracks? A) As in Summers, due to the heat of sun the rail track expand. B) Just to put sand. C) As they can't make so long tracks. D) So the train moves smothely. Show Answer Correct Answer: A) As in Summers, due to the heat of sun the rail track expand. 59. During condensation and evaporation of water, the ..... of water changes. A) Appearance. B) State. C) Movement. D) None of the above. Show Answer Correct Answer: B) State. 60. Iron new subtance A) Rust. B) Ash. C) All the above. D) None of the above. Show Answer Correct Answer: A) Rust. ← 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 4Class 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