EASY
7th CBSE
IMPORTANT
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Dissolving salt in water to form a solution is a chemical change.

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Important Questions on Physical and Chemical Changes

HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
How is quicklime formed from marble stones? 
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
What changes take place when quicklime is placed in water?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
What causes browning of the exposed cut surface of a brinjal? 
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
What kind of change is the browning of a cut brinjal?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
How do we get crystals of salt back from a saturated solution of salt?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
Name the type of change taking place in the following: melting of wax.
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
Name the type of changes taking place in the following: burning of wax candle.
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>EXERCISES>Q V
Name the type of change taking place in the following: digestion of food in food canal.