Question

why does a paper cup with water in it not burn?

Answer 1

Hey friend , here is your answer

◆ Paper cup with water is not burned beacause it prevents paper cup by attaining it's ignition temperature.

◆Combustion takes place only when it attains it's ignition temperature


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Answer 2

the liquid/ hydrogen will stop/ will not allow fire to come around it .
so paper cup will not burn