Science, asked by priyanka1986rawat, 19 hours ago

b.
Which of the following are chemical changes ?
(i) Decaying of wood.
(ii) Burning of wood
(iii) Sawing of wood.
(iv) Hammering of a nail into a piena of wood
.
​

Answers

Answered by pihu4976
2

Answer:

burning of wood is a chemical change

Answered by Anonymous
2

Answer:

(i) Decaying of wood.

(ii) Burning of wood

Explanation:

Burning and decay result in formation of new substances and they cannot be reversed. Hence, they are chemical changes. Sawing of wood and hammering of a nail into a piece of wood are physical changes.

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