NMMS CLASS 7 PHYSICAL AND CHEMICAL CHANGE 2

-

 



👉 ALL NMMS INTERACTIVE TESTS 👈



NMMS CLASS 7 ENGLISH PHISICAL AND CHEMICAL CHANGE 2👇


1. Formation of rust on iron nails kept in damp air is due to

  • Reaction of iron with oxygen and water
  • Reaction with nitrogen
  • Reaction with carbon dioxide
  • Reaction with dust

2. Which of the following is an irreversible change?

  • Melting of ice
  • Evaporation of water
  • Dissolving sugar
  • Burning of paper

3. Which of the following shows both physical and chemical changes together?

  • Freezing of water
  • Melting of wax
  • Breaking of glass
  • Burning of candle

4. When magnesium burns in air, the product is

  • White ash of magnesium oxide
  • Black powder
  • Magnesium sulphate
  • Magnesium carbonate

5. Which of these changes involves heat absorption?

  • Burning of wood
  • Condensation of steam
  • Rusting of iron
  • Melting of ice

6. Which one is a slow chemical change?

  • Explosion of fireworks
  • Burning of paper
  • Cooking of food
  • Rusting of iron

7. Which of the following is a physical change?

  • Burning of sulphur
  • Cooking rice
  • Fermentation of milk
  • Sublimation of iodine

8. Which of these changes can be reversed?

  • Rusting of iron
  • Burning of candle
  • Curdling of milk
  • Freezing of water

9. Which of the following is a fast chemical change?

  • Rusting of iron
  • Tarnishing of silver
  • Digestion of food
  • Burning of magnesium

10. The green coating on copper vessels is due to

  • Formation of basic copper carbonate
  • Formation of copper sulphide
  • Formation of copper oxide
  • Deposition of dust

11. Heating of ammonium chloride and collecting the vapours shows

  • Evaporation
  • Burning
  • Condensation
  • Sublimation

12. When water freezes,

  • A new substance is formed
  • Hydrogen gas is released
  • Oxygen is absorbed
  • No new substance is formed

13. Which one is not a chemical change?

  • Burning of paper
  • Cooking of rice
  • Rusting of iron
  • Melting of butter

14. Which of the following statements is true?

  • Chemical changes are reversible
  • Physical changes form new substances
  • No energy is involved in chemical changes
  • Chemical changes are irreversible

15. In rusting, the gas involved is

  • Carbon dioxide
  • Nitrogen
  • Hydrogen
  • Oxygen

16. The process of rusting can be prevented by

  • Soaking it in water
  • Leaving it in open air
  • Scratching the surface
  • Painting the metal

17. Burning of hydrogen in air forms

  • Water vapour
  • Hydrogen peroxide
  • Oxygen
  • Carbon monoxide

18. Which of these involves formation of a precipitate?

  • Dissolving sugar in water
  • Melting of ice
  • Mixing of lead nitrate and potassium iodide
  • Mixing of vinegar and baking soda

19. Respiration and burning are similar because

  • Both release energy
  • Both absorb energy
  • Both form rust
  • Both are reversible

20. Rusting takes place faster in

  • Dry air
  • Distilled water
  • Vacuum
  • Moist air

21. Which one is a physical change among the following?

  • Burning of paper
  • Cooking of rice
  • Ripening of fruit
  • Tearing of paper

22. Which of these is an example of corrosion?

  • Melting of ice
  • Breaking of wood
  • Freezing of water
  • Rusting of iron

23. Formation of clouds from water vapour is

  • Chemical change
  • Irreversible change
  • Permanent change
  • Physical change

24. Which of these changes produces gas?

  • Melting of ice
  • Dissolving sugar
  • Condensation of water
  • Burning of magnesium ribbon

25. Which one is a reversible change?

  • Burning of wood
  • Rusting of iron
  • Cooking of food
  • Melting of ice

26. When vinegar reacts with baking soda, it produces

  • Carbon dioxide gas
  • Hydrogen gas
  • Oxygen gas
  • Water vapour

27. The process of burning is called

  • Condensation
  • Evaporation
  • Corrosion
  • Combustion

28. When water vapour changes into liquid, the process is called

  • Evaporation
  • Sublimation
  • Melting
  • Condensation

29. Which of the following involves no new substance?

  • Burning wood
  • Cooking wood
  • Decomposition of wood
  • Cutting wood

30. Photosynthesis is opposite to

  • Rusting
  • Fermentation
  • Condensation
  • Respiration

31. Which one of the following is endothermic?

  • Condensation of water
  • Burning of coal
  • Rusting of iron
  • Evaporation of water

32. Which among the following is a temporary change?

  • Burning of candle
  • Rusting of iron
  • Cooking of food
  • Stretching of rubber band

33. What happens when a piece of iron is kept in moist air?

  • Rust forms slowly
  • No change occurs
  • Iron melts
  • Iron breaks

34. The burning of LPG gas is a

  • Physical change
  • Reversible change
  • Temporary change
  • Chemical change

35. When sugar solution is heated, it caramelises. This is a

  • Physical change
  • Reversible change
  • Mechanical change
  • Chemical change

36. Which one shows both physical and chemical changes?

  • Boiling water
  • Freezing ice
  • Cutting fruit
  • Lighting a candle

37. When dilute acid reacts with metal, it forms

  • Hydrogen gas
  • Oxygen gas
  • Carbon dioxide
  • Sulphur

38. Which change cannot be reversed easily?

  • Freezing of water
  • Melting of wax
  • Evaporation of water
  • Cooking of food

39. When milk turns sour, it

  • Forms new substances
  • Remains same
  • Freezes
  • Evaporates

40. Heating sugar till it becomes brown is a

  • Physical change
  • Reversible change
  • Temporary change
  • Chemical change

41. The chemical formula of rust is

  • Fe₂O₃·xH₂O
  • FeO
  • Fe(OH)₂
  • FeCO₃

42. Which of the following is an irreversible change caused by heat?

  • Melting ice
  • Boiling water
  • Evaporating alcohol
  • Cooking rice

43. When wax melts,

  • A new substance is formed
  • Carbon dioxide is released
  • It burns
  • No new substance is formed

44. The change that cannot be reversed by any means is

  • Freezing of water
  • Melting of butter
  • Evaporation of water
  • Burning of coal

45. Rusting can be prevented by

  • Melting
  • Heating
  • Freezing
  • Galvanisation

46. The process of coating iron with zinc is called

  • Rusting
  • Painting
  • Oxidation
  • Galvanisation

47. Which one of the following is a chemical change in daily life?

  • Melting butter
  • Boiling water
  • Chopping onion
  • Cooking food

48. When two substances mix and a gas forms, it is a sign of

  • Physical change
  • Mechanical change
  • Reversible change
  • Chemical change

49. The color change in rusting is due to

  • Formation of hydrated iron oxide
  • Evaporation of water
  • Deposition of dust
  • Physical polishing

50. Which of these is a reversible change?

  • Rusting of iron
  • Burning of candle
  • Cooking of egg
  • Condensation of steam
Location: Mogalturu, Andhra Pradesh 534281, India

Comments

Post a Comment

Popular posts from this blog

FA 2 SAT 2 10TH ENGLISH PREPARATION AND MODEL PAPERS

-
Image
  10TH ENGLISH FA 2 PREVIOUS MODEL PAPERS ONLY MCQS (CBA)  👈 FA 2 SYLLABUS 👇 2025-26 👇 COMPETENCY BASED ASSESSMENTS 👇👇 4. From the Diary of Anne Frank ANNE FRANK 4 Tests 👇 Test - 1 Test 2 Test 3.  Se Test 4 Amanda! ROBIN KLEIN Test 1 Amanda Test 2 5. Glimpses of India 👇 I. A Baker from Goa LUCIO RODRIGUES   A Bakery From Goa Test 2 II. Coorg LOKESH ABROL   Coorg Test 2 III. Tea from Assam ARUP KUMAR DATTA  Tea From Assam Test 2 The Trees ADRIENNE RICH   Trees Test 2   New 👉 The Trees Adrienne Rich 6. Mijbil the Otter Gavin Maxwell  Mijbil the Otter Test 2 Mijbil the Otter Test 3   Mijbil the Otter 4 Fog G Carl Sanburg 4. A Question of Trust VICTOR CANNING New 👉 A Question of Trust COMPETENCY BASED ASSESSMENT: 2 5. Footprints without Feet Supplementary Reader (SR) H.G. WELLS   New CBA 👉  FOOTPRINTS WITHOUT FEET PART 1  6. The Making of a Scientist ROBERT W. PETERSON   New - CBA - The Making of a Scientist Par...
Read more

10th English SA 1 PREPARATORY TEST 1

-
Image
  SA 1 PRACTICE TEST 2 SA 1 PRACTICE TEST 3   SA 1 PRACTICE TEST 4   SA 1 PRACTICE TEST 5   For Anne Gregory  10th English Summative Assessment 1 Portions   First Flight 1 to 8 Lessons,  And The Footprints Without Feet 1 to 7 Lessons,  WORKBOOK: 1 TO 8 Lessons , 👉  FA: 1 ,  FA: 2 , FA: 3 , FA: 4, SA: 1 , SA: 2. 👈 👉 NMMS 👈 10th English SA 1 PREPARATORY TEST: 1 👇 1. What did Lencho hope for from God? Help from his family Faith in God’s help Support from the priest Blessings from his wife Correct Answer: Faith in God’s help 2. What ruined Lencho’s crops? A locust attack in sprin...
Read more

FA 1 10th English

-
Image
  https://www.bhavyasriacademy.in/2024/07/reported-speech-3.html 10th English Public Exam Preparation 2025-26 Practice A Letter to God Quizzes for Your Exams👇  Self Assessment Test 1 A Letter to God  A Letter to God   A Letter to God    A Letter to God   A Letter to God A Letter to God   A Letter to God   👉 PART 1 👉PART 2   👉 PART 3   👉FA 1   Dust of Snow (poem) Fire and ice (Poem) Nelson Mandela: A Long Walk to freedom 👇👇👇 A Long Walk to Freedom 1 A Long Walk to Freedom 2 A Long Walk to Freedom 3  New 👉 A Long Walk to Freedom Part, 123👈 A tiger in the Zoo (poem), New 👉 A Tiger in the Zoo   How to Tell Wild Animals Poem A Triumph of Surgery. (SR)   A Triumph of Surgery. (SR)     Grammar: Non-defining Relative Clauses    Active Voice and Passive Voice And Vocabulary  (Build Your Vocabulary Quizzes)     Simple Grammar Tests 100 Reported Speech.  If Claus...
Read more