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Question 7Which 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) |
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Answer» Question 7 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) |
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