how is it possible that water can be bolied in a paper cup without burning it
Answers
yes it is possible
(a) Take some water in a paper cup and heat it. It is observe that it is possible to boil water without burning the paper cup. This is due to the reason that he heat given by the flame is quickly transferred from the paper cup to the water. As a result the temperature if the paper does not reach the ignition temperature and hence is not burned. The heat gained by water raises its temperature and finally it starts boiling.
(b) Take a piece of cotton cloth and soak it in a mixture containing equal amounts of water and alcohol. Now light this cloth with a match sticks. It is observed that the cloth catches fire immediately. After sometime, the fire extinguishes without burning the cloth.
hey mate here is your asnwer
The boiling water can't get above 212 degrees, and the paper is thin enough that this water keeps its temperature from climbing high enough to combust. It's only when the water on the other side of the paper entirely boils away that the paper cup will burn away.
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