Question

While burning of wood, ________ energy is converted to _______ energy.

• A. chemical, heat
• B. chemical, mechanical
• C. heat, mechanical
• D. mechanical, chemical

Answer 1

The correct option is A chemical, heat

While burning of wood, the chemical energy in the wood is released as heat because of the chemical reaction of wood and oxygen. This type of chemical reaction is called combustion and it requires oxygen. Combustion converts the stored chemical energy in the wood into heat and light energy.