Which one of the following is an irreversible change?
(a) evaporation or boiling of wax
(b) only gentle heating of wax
(c) melting of wax
(d) burning of wax
Answers
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Answer:
c melting of wax is right answer
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Answer:
c) melting of wax
Explanation:
In option a,b,d - all are reversible
In option c - Melting of wax is an irreversible change
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