Nitrogen is the most abundant component of Earth's atmosphere, making up approximately 78% of dry air. Oxygen is the second most abundant at about 21%.
The most abundant component in Earth's atmosphere (Air) is?
Review the verified answer and explanation for this PPSC Punjab Public Service Commission past-paper question on CampusFin.
Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.