5th Chapter

7th General Science English Medium Chapter 5 Test

Here you can prepare 7th General Science English Medium Test. Click the button for 7th General Science English Medium Chapter 5 100% free full practice test.

7th Class General Science MCQ Test With Answer for Science chapter 5

7th Class General Science MCQ Test With Answer for Science chapter 5

Sr. # Questions Answers Choice
1 A piece of iron is kept in open air for 5 days. A film of corrosion formed over it is.
  • A. Iron oxide
  • B. Iron sulphide
  • C. Iron Chloride
  • D. Iron Hydride
2 What are teh products when electric current is passed through water.
  • A. Only steam
  • B. Hydrogen and steam
  • C. Hydrogen and oxygen
  • D. Oxygen and steam
3 Chemical reaction of oxygen with other substances is called.
  • A. Oxidation
  • B. Reduction
  • C. Rusting
  • D. None of these
4 During combustion, a substance reacts with
  • A. Hydrogen
  • B. Water
  • C. Oxygen
  • D. Carbon di oxide
5 Rusting of iron takes place in the presence of.
  • A. Moisture
  • B. O2
  • C. Both moisture and O2
  • D. Dry air
6 Zince oxide is ............... solid substances.
  • A. Red
  • B. White
  • C. Yellow
  • D. Blue
7 What happens to water on heating.
  • A. Evaporates
  • B. Condense
  • C. Freez
  • D. None of these
8 The temperature at which a liquid's vapour pressure is equal to the external pressure surrounding the liquid is.
  • A. Melting point
  • B. Boiling point
  • C. Freezing point
  • D. Highest temperature.
9 Freezing of a liquid is a
  • A. Chemical change
  • B. Chemicla property
  • C. Physical change
  • D. None of these
10 Select all that happen during a chemicla change.
  • A. A temporary chagne occurs.
  • B. Composition of the substanes is changed.
  • C. Propertis of the sbstances are changed.
  • D. New substances with different properties are formed.

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Irshad Ali

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