Q. Which of the following are the observations of the chemical reaction?
- Change in state
- Evolution of a gas
- Change in colour
- Change in temperature
Select the correct answer from the codes given below:
Answer:
All of the above
Notes: We can say that any of the following observations helps us to determine whether a chemical reaction has taken place or not :
- Change in state
- Change in colour
- Evolution of a gas
- Change in temperature.
As we observe the changes around us, we can see that there are many chemical reactions taking place around us.