Answer: All of the above
Notes: Many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to become hotter. Some examples of exothermic reactions are: burning of natural gas; respiration, nuclear fission and the decomposition of vegetable matter into compost.
This Question is Also Available in:
हिन्दी