Question

1. (a) Does a paper burn when a lighted matchstick is brought close
to it?
(b) Does a piece of wood burn when a lighted matchstick is
brought close to it?
(c)Why do you use paper or kerosene oil to burn wood or coal?
(d)Why a can full of kerosene oil does not catch fire on its own?
(e)Name some materials that produce a flame on burning?
(f)Name some materials that do not produce flame on burning.​

Answer 1

ANSWER >>>

a) Yes, it burns.

b) No, it doesnt generally.

c) Paper's ignition temperature is low but wood's and coal's ignition temp. is high. We burn paper to burn wood/coal to up the temperature.

d) A kerosene can dosent catch fire on its own because its ignition temp. is higher than the temperature in which it is kept in.

e) wood, paper, magnesium ribbon, etc.

f) Substances always produce flames when they burn but in some cases the flames are not visible to the human eye for example, coal.

Answer 2

Hi friend

How are you?

Here is your answer :-

ANSWER:-

1) YES,

2) No, because lighted matchstick can raise the ignition temperature of wood.

3)We use kerosene oil to burn wood or coal because kerosene is easily accessible, cheap and can easily raise temperature which is required to burn wood or coal.

4) A can full of kerosene oil doesn't catch fire on its own because in can it doesn't get enough temperature to burn.

5) Campour and kerosene produce flame on burning.

6)Coal is the material that do not produce flame on burning.

I hope this answer may help you.

Thank you,

Goodbye and have a nice day.