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Subjects
Science CBSE
Class 7
Physical and chemical changes
Textbook questions
2.
Exercises II
Exercise condition:
3
m.
Classify the changes involved in the following processes as physical or chemical changes:
(d)
. Melting of wax.
Chemical changes
Physical changes
No changes
(e)
. Beating aluminium to make aluminium foil.
Chemical changes
Physical changes
No changes
(f)
. Digestion of food.
Chemical changes
Physical changes
No changes
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