What does a decrease in the temperature of the reaction mixture generally indicate during a chemical reaction?
Answer and explanation
Correct answer: Absorption of heat
A fall in the temperature of the reaction mixture generally means that the reaction is absorbing heat from its surroundings. Such reactions are called endothermic reactions. In contrast, exothermic reactions release heat and generally cause a temperature rise, so option B is incorrect. Formation of a gas or a metal is not a necessary indication of a temperature decrease.
Frequently asked questions
What is the correct answer to this question?
Absorption of heat
Why is this the correct answer?
A fall in the temperature of the reaction mixture generally means that the reaction is absorbing heat from its surroundings. Such reactions are called endothermic reactions. In contrast, exothermic reactions release heat and generally cause a temperature rise, so option B is incorrect. Formation of a gas or a metal is not a necessary indication of a temperature decrease.
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.
