B.P.S.C. TRE-3 July, 2024
Which of the following is not a physical change?
aDissolving salt in water
bBurning coal✓ Correct
cMelting of ice
dMore than one of the above
eNone of the above
Explanation
Burning coal is an example of a chemical change, whereas melting of ice and dissolving salt in water are examples of physical changes. A chemical change occurs as a result of a chemical reaction, while a physical change occurs when the form changes but the chemical composition does not change.
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