(a) Irreversible change
(b) Reversible change
(c) Sawing of a piece of wood
(d) Ripening of mango
(e) Melting of wax
(f) Formation of a sugar solution (i) Needs mixing of two substances
(ii) Needs heating
(iii) Chemical change
(iv) A new substance is formed
(v) Physical change
(vi) No new substance is formed
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Answer:
(c)
Explanation:
it is not a term of science
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