Q7Multiple choice
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 piece of wood
- (a)(i) and (ii)
- (b)(ii) and (iii)
- (c)(iii) and (iv)
- (d)(i) and (iv)
Show answer
(a) (i) and (ii)