A) None of these
B) Chemical change
C) Physical change
- 2. Dissolving sugar in water
A) Chemical change
B) Physical change
C) None of these
A) Physical change
B) Chemical change
C) None of these
A) Chemical change
B) Physical change
C) None of these
- 5. Beating aluminium to make aluminium foil
A) None of these
B) Chemical change
C) Physical change
A) Physical change
B) None of these
C) Chemical change
- 7. Cutting a log of wood into pieces is a chemical change.
A) None of these
B) False
C) True
- 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) False
B) True
C) None of these
- 10. Iron and rust are the same substances.
A) None of these
B) False
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) Fe2O
B) Fe2O2
C) Fe2O3
- 13. When carbon dioxide is passed through lime water, it turns milky due to the formation of _________.
A) None of these
B) Calcium carbonate (CaCO3)
C) Sodium hydrogen carbonate
- 14. The chemical name of baking soda is _________.
A) Calcium carbonate
B) None of these
C) Sodium hydrogen carbonate
- 15. Two methods by which rusting of iron can be prevented are _________ and ____ ____.
A) Galvanization and heating
B) Apply oil
C) Galvanization and painting
- 16. Changes in which only _____ __ properties of a substance change are called physical changes.
A) Physical
B) None of these
C) Chemical
- 17. Changes in which new substances are formed are called _________changes.
A) Physical
B) None of these
C) Chemical
- 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) Physical change
B) Chemical change
C) None of these
A) Physical change
B) None of these
C) Chemical change
A) Physical change
B) Both physical and chemical changes
C) Chemical change
- 21. Breaking down of larger food particles into smaller particles
A) None of these
B) Physical change
C) Chemical change
A) None of these
B) Chemical change
C) Physical change
- 23. Crystals of copper sulphate are prepared by the method of
A) Distillation
B) Fractional distillation
C) Solidification
D) Crystallization
- 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) Both processes A and B are chemical changes.
B) Process − B is a chemical change.
C) None of these processes is a chemical change.
D) Process − A 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) None of these processes is a chemical change.
B) Both processes A and B are chemical changes.
C) Process − A is a chemical change.
D) Process − B is a chemical change.
- 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
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