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

Chemistry Chapter -4

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

The food is not cooked completely

The fuel is not burning completely

The fuel is wet

The fuel is burning completely

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Explanation:

In case the fuel doesn’t burn completely, i.e., there is not enough oxygen to react with the carbon to produce carbon dioxide, then the unburnt carbon particles are left behind in the form of black particles known as soot. These soot particles stick to the bottom of the vessel making it black.