Question

Which of the following is common for both respiration and combustion?

• A. A small amount of energy is released in both the processes.
• B. Both are fast processes.
• C. They are natural processes.
• D. Carbon dioxide and water vapour are formed in both the processes.

Answer 1

The correct option is D

Carbon dioxide and water vapour are formed in both the processes.

Similarities between respiration and combustion:

1. Oxygen is required
2. Carbon dioxide and water vapour are formed.

A small amount of energy is released in respiration, whereas a large amount of energy is released during combustion. Respiration is a slow process while combustion is a fast process. Respiration is a natural process while combustion is a man-made process.