Question

What is the major cause of global warming?

• A. Gaseous nitrogen oxides released by petrol engines
• B. Oxides of sulphur and nitrogen dissolved in rain water
• C. Emission of sulphur dioxide on combustion of coal
• D. Release of carbon dioxide on combustion of fuels

Answer 1

The correct option is D Release of carbon dioxide on combustion of fuels

On combustion, almost every fuel releases carbon dioxide in the environment. The increased concentration of carbon dioxide is believed to capture the reflected sun rays, thereby increasing the temperature of the Earth. Hence, it leads to global warming.

The correct answer is option 'd'.