Question

Which one of the following is major greenhouse gas?

Options

• Freon

• CO₂

• CFC

• NO₂

Answer 1

CO₂

Explanation:

Carbon dioxide (CO₂) is the main greenhouse gas responsible for trapping heat in the Earth's atmosphere, contributing significantly to the greenhouse effect and global warming. While Freon and CFCs (chlorofluorocarbons) also contribute to the greenhouse effect and ozone depletion, CO₂ is the most abundant and major greenhouse gas emitted through burning fossil fuels and other human activities. Nitrogen dioxide (NO₂) is a pollutant but not considered a major greenhouse gas compared to CO₂.