Question

Respiration is an exothermic process. Give reason.

Answer 1

Yes respiration is a exothermic process. Exothermic process involves release of heat energy, respiration involves release of heat energy through our nose.

Answer 2

Whatever we eat, first it broken down into simpler substances which our body exactly need...
food broken down into a Glucose which is the main source of energy we obtain from food...

When this glucose react with Oxygen( which is present in our blood ) it forms CO2 , Water and Energy.Here Energy is a heat which produces during this chemical reaction which maintain or regulate our body temperature also...
This process of producing heat is called Respiration...

Also we know that Exothermic Reactions are heat producing reactions...During respiration heat is produced and so called Respiration is a exothermic process...