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Chemistry CBSE Live product
Class 7
Changes around us: Physical and chemical changes
Reversible and irreversible changes
5.
Some slow natural changes
Question:
2
m.
Choose
the suitable answer.
1.
Soil erosion and weathering are example of
human-made change
man-made change
synthetic change
natural change
2.
When water enters cracks in rocks, it makes cracks wider when the
water freezes
water boils
water evaporates
water escapes
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