Question

Rahul is burning coal in a closed room. Which of the following gases are most likely to be produced?

• A. Methane
• B. Carbon monoxide
• C. Carbon dioxide
• D. Nitrogen dioxide

Answer 1

Answer: (B), (C)

Carbon dioxide

When coal is burnt in a closed room, the supply of oxygen is limited causing incomplete combustion. This leads to the formation of carbon monoxide $\left(CO\right)$ gas.

Apart from this, a small amount of carbon dioxide $\left(C{O}_2\right)$ is also produced as some carbon atoms undergo complete combustion as well.