Start learning →

Which gas is the most abundant by volume in Earth dry air?

AOxygen gas
BCarbon dioxide
CNitrogen gas
DArgon gas
Answer & Solution
Correct answer: C. Nitrogen gas
Nitrogen makes up approximately 78.08 percent of the volume of dry atmospheric air.
Practise this question with Quill — RRB NTPC →

Keep practising World Geography and Environment

Browse all World Geography and Environment questions for RRB NTPC, or explore more General Awareness topics.

Start a World Geography and Environment lesson →