please answer this question.....
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Melting of cadbury Chocolate should be the answer as heat is absorbed to change from solid to semi solid or liquid form.
In respiration heat is released by oxidation of food as ATP.
In glowing of bulb heat is released due to heating effect of current and glass gets hot.
In burning there is evolution of energy in form of heat and light with CO2 .
Hence B will be the answer
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