Question

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Answer 1

Answer:

I think it is (ii) option

Burning of wood

Answer 2

Answer:

Both (i) and (ii)

Explanation:

(i) Decaying of wood and (ii) Burning of wood are chemical changes because in these processes, the chemical composition of wood is changed and new substances are formed. These changes are irreversible which cannot be converted back into their original form because chemical reactions are irreversible in nature.