Which gas makes up the largest percentage of Earth’s atmosphere?

Explanation

Nitrogen makes up about seventy-eight percent of Earth’s atmosphere, making it by far the most abundant atmospheric gas, followed by oxygen at around twenty-one percent. Nitrogen is relatively inert, meaning it does not easily react with other substances, which is why it does not support combustion the way oxygen does. Nitrogen gas is also used industrially to preserve packaged foods by displacing oxygen. Explore more Everyday Science MCQs on mcqstutor to keep practicing.