Question

which of the following is a chemical change :- (1) cutting of wood. (2) hammering of nail in wood. (3) decaying of wood. (4) none of these.​

Answer 1

Answer:

option 3 decaying of wood is a chemical change

Explanation:

Because in the process of decaying of wood the chemical composition of wood is changed and new substances are formed.

Answer 2

Answer:

(3) decaying of woods

Explanation:

when wood absorbs moisture and is left as it is the moisture substance and the substance of the woods reacts thus forming decaying wood