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Subjects
Science CBSE
Class 7 New
Changes around us: Physical and Chemical
Pumpa Practice Questions
25.
Reversible and irreversible changes
Exercise condition:
2
m.
Select the correct answer:
1.
Which process changes water into ice?
Cooking
Freezing
Boiling
Melting
2.
Which of the following changes can be reversed by cooling?
Burning wood
Rusting iron
Baking bread
Melting butter
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