Question

which among the following are physical or chemical change?

1. evaporation of petrol

2.burning of LPG gas.

3.heating of iron rod to red hot.

4.curdling of milk

5.sublimation of solid ammonium chloride.

Answer 1

1.physical
2.chemical
3.physical
4.chemical
5.physical

Answer 2

1. Physical change.

2. Chemical change.

3. Physical change.

4. Chemical change.

5. Physical change.

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