Which element is the most abundant in Earth’s ‘Atmosphere’?
AOxygen
BArgon
CNitrogen
DCarbon Dioxide
Explanation
• Nitrogen makes up about 78% of the air.
• It is relatively inert and does not react easily.
• It is essential for building proteins in all life forms.
Exam Relevance
- Topic: Competitive Exams
- Subtopic: FPSC/PPSC Past Papers
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