Which of the following are chemical changes?
(a) Decaying of wood
(b) Burning of wood
(c) Cutting of wood
(d) Hammering of nail into wood
Choose one:
(a) & (b)
(a) & (c)
(c) & (d)
(a) & (d)
Answers
Answered by
17
hey mate!!
a & b is the answer
a & b is the answer
Anonymous:
thanxxxx. for marking me
Which of the following is a physical change?
Choose one:
Rusting of iron
Combustion of hydrogen
Magnesium wire is burnt
Iron is magnetised
Choose one:
Rusting of iron
Combustion of hydrogen
Magnesium wire is burnt
Iron is magnetised
answer this no fast
iron magnetised
ok thanks
Answered by
13
a and b
(a) Decaying of wood
(b) Burning of wood
(a) Decaying of wood
(b) Burning of wood
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