While cooking, if the bottom of the vessel is getting blackened on the outside, it means that ?

(a) food is not cooked completely (b) the fuel is not burning completely (c) fuel is wet (d) fuel is burning completely

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Sneha
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Saturday, 28 November 2020 09:51 AM

d

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    • Soham ghosh
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    Friday, 27 November 2020 10:37 AM

    While cooking, if the bottom of the vessel is getting blackened on the outside, it means that the fuel is not burning completely. When the fuel burns completely giving a blue flame, the bottom of the vessel remains clean. 

    When the fuel does not burn completely then a sooty flame appears which makes the bottom of the utensil black. It is due to the air holes, which are getting blocked and the fuel does not burn completely.

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    • Soham ghosh
    EXCELLENCE IS THE KEY TO SUCCESS
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    Friday, 27 November 2020 10:33 AM

    While cooking, if the bottom of the vessel is getting blackened on the outside, it means that fuel is not burning completely. 
    On complete burning of a hydrocarbon fuel in oxygen, will primarily yield carbon dioxide and water. Incomplete combustion will occur when there is not enough oxygen to allow the fuel to react completely to produce carbon dioxide and water. It also happens when the combustion is quenched by a heat sink, such as a solid surface or flame trap. Partially oxidized fuel  produce harmful acetaldehyde, and carbon can produce toxic carbon monoxide.

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