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Chemistry CBSE Live product
Class 7
Changes around us: Physical and chemical changes
Changes: Physical and chemical changes
1.
Indicators of chemical changes
Question:
2
m.
Match
the
following
:
Answer variants:
Baking soda with vinegar
No new substance
Air and moisture
Wires
Column I
Column II
1.
Rusting
2.
\(CO_2\) release
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