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Class 8 Tuition > Learn Combustion and Flame > 4. We can prepare tea in a paper cup and it does not...
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4. We can prepare tea in a paper cup and it does not catch fire. Why?

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Preparing tea in a paper cup without it catching fire is possible due to several factors: Water Content: When you prepare tea, you are adding water to the paper cup. The water helps regulate the temperature of the cup, preventing it from reaching the ignition point. As long as there is...
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Preparing tea in a paper cup without it catching fire is possible due to several factors:

  1. Water Content:

    • When you prepare tea, you are adding water to the paper cup. The water helps regulate the temperature of the cup, preventing it from reaching the ignition point. As long as there is enough water to absorb and distribute the heat, the paper cup remains below the temperature at which it would catch fire.

  2. Limited Exposure to Heat:

    • The process of making tea typically involves short exposure to heat. The time the paper cup is in contact with the hot water is usually brief, and the water itself helps to distribute the heat evenly. Continuous exposure to high temperatures could eventually lead to combustion, but tea preparation does not usually involve such prolonged heat exposure.

  3. Low Ignition Temperature of Paper:

    • While paper has an ignition temperature, it's not an absolute value. The ignition of paper depends on factors like the presence of an ignition source, the duration of exposure to heat, and the specific conditions. In the case of tea preparation, the conditions are generally not conducive to igniting the paper cup.

It's worth noting that the ability to use a paper cup for tea is specific to the relatively low temperatures involved in this process. If you were to subject a paper cup to direct and sustained high heat, such as an open flame or a very hot surface, it could eventually catch fire. Always exercise caution and use appropriate materials when dealing with heat sources to avoid accidents or fire hazards.

 
 
 
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