Change in temperature — task. Chemistry CBSE Live product, Class 10 (2026-27).

Choose the best answer:

1. In an exothermic reaction:

Light energy is absorbed
No energy change occurs
Heat energy is released to the surroundings
Heat energy is released to the surroundings

2. Which observation would most likely indicate that a chemical reaction is endothermic?

Bright light is produced
The reaction mixture becomes warmer
The reaction vessel becomes cold to touch
Heat is released into the surroundings

Login or Fast registration

Exit to the topic

Did you find an error?