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Subjects
Science State Board
Class 7
Changes around us
Textbook questions
1.
Choose the best answer I
Exercise condition:
3
m.
1
.
When a woolen yarn is knitted to get a sweater, the change can be classified as
chemical change
physical change
endothermic change
exothermic change
2
.
__________ of the following are endothermic changes.
Evaporation and freezing
Condensation and freezing
Condensation and melting
Evaporation and melting
3
.
The chemical change is
growth of a tree
cow dung to bio-gas
ice-cream to molten ice-cream
water to clouds
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