alleryशुष्क हवा में ऑक्सीजन का अनुमानित प्रतिशत कितना है?
A12 प्रतिशत
B15 प्रतिशत
C18 प्रतिशत
D21 प्रतिशत
Answer & Solution
Correct answer: D. 21 प्रतिशत
पृथ्वी की शुष्क वायुमंडलीय हवा के आयतन में ऑक्सीजन का हिस्सा लगभग 20.95 प्रतिशत (लगभग 21%) होता है।
Keep practising World Geography and Environment
Browse all World Geography and Environment questions for RRB NTPC, or explore more General Awareness topics.
Related questions
RRB NTPC · Climate Change ProtocolsRRB NTPC · Oceans and Earth FeaturesThe ozone layer that absorbs ultraviolet radiation is situated primarily in the:In which atmospheric layer do virtually all clouds and weather phenomena occur?Which gas is the most abundant by volume in Earth's dry atmosphere?Which is the deepest oceanic trench on Earth?Which strait separates the continents of Asia and North America?Which is the largest hot desert in the world?