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Materials: Metals And Non Metals Mock Tests

28 questions available

Materials: Metals And Non Metals Mock Test 1

Questions: 28

Sample Questions

Class 8 Science
Which of the following is used as a lubricant in machines?
A Graphite
B Sodium
C Iron
D Aluminium
Class 8 Science
Which metal is liquid at room temperature?
A Sodium
B Iron
C Mercury
D Magnesium
Class 8 Science
When iron nails are placed in copper sulphate solution, the solution turns green because:
A Copper is displaced from solution
B Iron displaces copper forming iron sulphate
C Iron dissolves without any reaction
D Copper sulphate decomposes
Class 8 Science
When zinc granules react with dilute sulphuric acid, hydrogen gas is produced. The correct observation is:
A The solution turns red
B Bubbles of gas form on the surface of zinc granules
C The solution becomes green
D A white precipitate forms
Class 8 Science
Which metal is the most abundant in the Earth's crust?
A Iron
B Aluminium
C Copper
D Gold
Class 8 Science
Which non-metal is stored in kerosene to prevent dangerous reactions?
A Sulphur
B Phosphorus
C Carbon
D Iodine
Class 8 Science
Which of the following is used as a lubricant in machines?
A Graphite
B Sodium
C Iron
D Aluminium
Class 8 Science
Which metal is liquid at room temperature?
A Sodium
B Iron
C Mercury
D Calcium

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