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Percentage of oxygen in air by volume ……………… 

Percentage of oxygen in air by volume ……………… 

A) 20.9% 

B) 78.1% 

C) 0.03% 

D) 0.1%

Monjur Alahi
Monjur Alahi
4 views
2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar
Salim Ahmed Kawsar

Correct option is A) 20.9%

4 views Answered 2023-02-05 15:29

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