Physical and Chemical Changes Quiz CBSE/Science/Class7
  • 1. Photosynthesis
A) Physical change
B) None of these
C) Chemical change
  • 2. Dissolving sugar in water
A) Physical change
B) Chemical change
C) None of these
  • 3. Burning of coal
A) Chemical change
B) Physical change
C) None of these
  • 4. Melting of wax
A) Physical change
B) Chemical change
C) None of these
  • 5. Beating aluminium to make aluminium foil
A) Chemical change
B) Physical change
C) None of these
  • 6. Digestion of food
A) Physical change
B) None of these
C) Chemical change
  • 7. Cutting a log of wood into pieces is a chemical change.
A) True
B) False
C) None of these
  • 8. Formation of manure from leaves is a physical change.
A) None of these
B) True
C) False
  • 9. Iron pipes coated with zinc do not get rusted easily.
A) None of these
B) False
C) True
  • 10. Iron and rust are the same substances.
A) False
B) None of these
C) True
  • 11. Condensation of steam is not a chemical change.
A) False
B) None of these
C) True
  • 12. The chemical name of rust is
A) Fe2O3
B) Fe2O
C) Fe2O2
  • 13. When carbon dioxide is passed through lime water, it turns milky due to the formation of _________.
A) Calcium carbonate (CaCO3)
B) Sodium hydrogen carbonate
C) None of these
  • 14. The chemical name of baking soda is _________.
A) Calcium carbonate
B) Sodium hydrogen carbonate
C) None of these
  • 15. Two methods by which rusting of iron can be prevented are _________ and ____ ____.
A) Galvanization and heating
B) Galvanization and painting
C) Apply oil
  • 16. Changes in which only _____ __ properties of a substance change are called physical changes.
A) None of these
B) Chemical
C) Physical
  • 17. Changes in which new substances are formed are called _________changes.
A) None of these
B) Chemical
C) Physical
  • 18. When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it?
A) Chemical change
B) Physical change
C) None of these
  • 19. Burning of wax
A) Physical change
B) None of these
C) Chemical change
  • 20. Eating of food
A) Chemical change
B) Both physical and chemical changes
C) Physical change
  • 21. Breaking down of larger food particles into smaller particles
A) None of these
B) Chemical change
C) Physical change
  • 22. Setting of curd
A) Chemical change
B) None of these
C) Physical change
  • 23. Crystals of copper sulphate are prepared by the method of
A) Crystallization
B) Distillation
C) Solidification
D) Fractional distillation
  • 24. The gas we use in the kitchen is called liquefied petroleum gas (LPG). In the cylinder it exists as a liquid. When it comes out from the cylinder it becomes a gas (Change − A) then it burns (Change − B). The following statements pertain to these changes. Choose the correct one.
A) None of these processes is a chemical change.
B) Process − A is a chemical change.
C) Both processes A and B are chemical changes.
D) Process − B is a chemical change.
  • 25. Anaerobic bacteria digest animal waste and produce biogas (Change − A). The biogas is then burnt as fuel (Change − B). The following statements pertain to these changes. Choose the correct one.
A) Process − A is a chemical change.
B) None of these processes is a chemical change.
C) Process − B is a chemical change.
D) Both processes A and B are chemical changes.
  • 26. Quiz on Physical and Chemical Changes for CBSE/Science/Class VII

    Narayana Home School, Nanniode
    - an online concept school

    nhsnanniode@gmail.com

    Type Yes to continue...
A) Yes
B) No
参加了这次测试的学生也参加了 :

创建 That Quiz — 为数学和其它学科出题和测试的网站.