which of the following is not a reversible change? option (a) melting of wax (b)burning of coal (c) boiling of water (d) ice formation from water
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Answered by
5
Answer:
b) Burning of coal
Explanation:
It is an irreversible change as in this process, the carbon in the coal is oxidised and forms ash and carbon dioxide, which cannot be undone.
Answered by
1
Answer:
a) melting of wax
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