If the temperature of a reaction mixture decreases during a reaction, it generally indicates which type of reaction?
Answer and explanation
Correct answer: Endothermic reaction
An endothermic reaction absorbs heat from its surroundings. If the absorbed energy is taken from the reaction mixture, its temperature generally falls, so option A is correct. An exothermic reaction releases heat and usually raises the mixture or surroundings temperature. Combustion is normally exothermic, while precipitation describes formation of a solid and does not by itself determine the direction of temperature change.
Frequently asked questions
What is the correct answer to this question?
Endothermic reaction
Why is this the correct answer?
An endothermic reaction absorbs heat from its surroundings. If the absorbed energy is taken from the reaction mixture, its temperature generally falls, so option A is correct. An exothermic reaction releases heat and usually raises the mixture or surroundings temperature. Combustion is normally exothermic, while precipitation describes formation of a solid and does not by itself determine the direction of temperature change.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
