Question

Combustion of fossil fuels in an insufficient supply of oxygen forms

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

Answer 1

The correct option is D

Carbon monoxide

The explanation of the correct option:

1. Carbon monoxide is produced because an insufficient amount of oxygen is provided.
2. When an insufficient amount of oxygen is provided for combustion, incomplete combustion takes place. Here, Carbon monoxide is produced as a byproduct.

The explanation of the incorrect options:

1. Carbon dioxide is not produced because an insufficient amount of oxygen is provided.
2. When a sufficient amount of oxygen is provided for combustion, the complete combustion of fuel takes place. In this case, Carbon dioxide is produced as a byproduct.
3. Oxygen is not produced because an insufficient amount of oxygen is provided in combustion. So, no oxygen is left after combustion.
4. Nitrogen is not participating in the combustion process. So, it is not produced.

Hence, the correct option is (D).