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Ignition Temperature

Wet paper doe...

Question

Wet paper does not burn while a dry paper catches fire easily. Why?

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Solution

Wet paper contains water which restricts it from reaching a sufficient temperature which provides enough energy to overcome the activation energy for the paper to react with oxygen. It is only on reaction with oxygen that paper catches fire.

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Similar questions

Q. Why does paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not?

Give reason for the following :

Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not

Q. Question 5 (c)
Give reason.
Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

Q. When we heat an empty paper cup it catches fire easily. But when we try to heat a paper cup with water, it does not catch fire. When we add water into the paper cup, its ignition temperature _____.

Give reasons.

(a) Water is not used to control fires involving electrical equipment.

(b) LPG is a better domestic fuel than wood.

(c) Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

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