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Question
Which of the following is not endothermic reaction?
Which of the following is not endothermic reaction?
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Solution
The correct option is D Combustion of wood
Endothermic reaction involves absorption of heat while exothermic reaction involves evolution of heat.
- Cooking of food- Energy should be supplied to cook food.
- Conversion of ice to water- Ice absorbs heat from surrounding to melt into water.
- Sublimation of camphor- Camphor absorbs heat and sublimates into vapour.
All the above reactions take in heat, so they are endothermic reaction. But combustion of wood gives out energy. So, it is an exothermic reaction.
Combustion of wood
Endothermic reaction involves absorption of heat while exothermic reaction involves evolution of heat.
- Cooking of food- Energy should be supplied to cook food.
- Conversion of ice to water- Ice absorbs heat from surrounding to melt into water.
- Sublimation of camphor- Camphor absorbs heat and sublimates into vapour.
All the above reactions take in heat, so they are endothermic reaction. But combustion of wood gives out energy. So, it is an exothermic reaction.
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