In pure and dry air of atmosphere, the combined percentage of nitrogen, oxygen and carbon-di-oxide is :
In pure and dry atmospheric air, nitrogen (approximately 78.08% by volume) and oxygen (approximately 20.95% by volume) together account for about 99.03%, and including…
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In pure and dry air of atmosphere, the combined percentage of nitrogen, oxygen and carbon-di-oxide is :
Answer and explanation
Correct answer A
In pure and dry atmospheric air, nitrogen (approximately 78.08% by volume) and oxygen (approximately 20.95% by volume) together account for about 99.03%, and including carbon dioxide (around 0.03%–0.04%) brings their combined share to more than 99%.
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Rajasthan SET (RSET)
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RPSC Senior Teacher Grade II