Science
Which of the following is an endothermic reaction?
options
- Burning of candle.
- Cooking of food.
- Decomposition of Vegetable matter.
- Reaction of Sodium with air
Chemical Reaction
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Answer
Cooking of food.
Reason — An endothermic reaction is a chemical process that absorbs heat energy from the surroundings for the reaction to take place.
During the cooking of food, ingredients such as rice, vegetables or dough take in heat energy to undergo various chemical and physical changes, including the breaking of molecular bonds and the formation of new substances.
Since this process requires a continuous supply of heat, the reaction will stop if the external heat source is removed.
In contrast, processes like the burning of a candle and the reaction of sodium with air are exothermic reactions, as they release heat energy into the surroundings.
Similarly, the decomposition of vegetable matter (rotting) is also a slow exothermic biological process.
Therefore, cooking of food is a clear example of an endothermic reaction, as it absorbs heat to proceed.
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