WBCS.LIVE practice question

Which gas is the most abundant in the Earth's atmosphere by volume?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Oxygen
  2. Carbon Dioxide
  3. Nitrogen
  4. Argon

Correct answer and explanation

Correct answer: Nitrogen

Explanation: āœ… Correct Answer: C) Nitrogen šŸ“š Explanation: Nitrogen makes up approximately 78% of the Earth's atmosphere, followed by oxygen at roughly 21%. Although it is chemically inert at normal temperatures, nitrogen is essential for life as it is a key component of amino acids and proteins. Other gases like argon and carbon dioxide exist only in trace amounts compared to these primary constituents.