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Physical & Chemical Changes Mock Tests

32 questions available

Physical & Chemical Changes Mock Test 1

Questions: 30

Physical & Chemical Changes Mock Test 2

Questions: 2

Sample Questions

Class 7 Science
Rusting of iron is an example of which type of change?
A Physical change
B Chemical change
C Reversible change
D Temporary change
Class 6 Science
Sodium hydroxide turns red litmus paper blue. What type of substance is sodium hydroxide?
A Acid
B Base
C Salt
D Water
Class 7 Science
Dissolving salt in water is reversible because the water can be evaporated to recover the salt. This is a:
A Physical (reversible) change
B Chemical (irreversible) change
C A biological change
D A nuclear change
Class 7 Science
Rusting of iron is an example of:
A Physical change
B Chemical change
C Reversible change
D Fast change
Class 7 Science
When zinc reacts with dilute sulphuric acid, which gas is released?
A Oxygen
B Hydrogen
C Carbon dioxide
D Nitrogen
Class 7 Science
When zinc reacts with dilute sulphuric acid, which gas is produced?
A Oxygen
B Hydrogen
C Carbon dioxide
D Nitrogen
Class 7 Science
Which of the following is a chemical change?
A Melting of ice
B Burning of paper
C Breaking of glass
D Dissolving sugar in water
Class 7 Science
Which of the following is a chemical change?
A Melting of ice
B Burning of paper
C Breaking of glass
D Dissolving sugar in water

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