Question

Column II
Column I
1. Melting of ice into water
2. Burning of candle in oxygen
3. Heating of calcium carbonate
4. Heating of potassium chlorate
(a) Chemical change
(b) Physical change
(C) Chemical decomposition
(d) Exothermic reaction​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

1. - (b)

2. - (d)

3. - (c)

4. - (a)