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2015-04-01T15:36:10+05:30

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Ignition temperature of paper is very low. When we try to ignite a paper, all the heat is absorbed by the paper and when it reaches its ignition temperature, it catches fire.
But when the paper is wrapped around a aluminium pipe, aluminium being a good conductor of heat, absorbs most of the heat and it takes more time for paper to reach the ignition temperature. So it doesn't catch fire easily.
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