Question

The content of the carbon dioxide in the air is 500 ppm(parts per million). What is the content of Oxygen in the air ?

• A. 300ppm
• B. 150ppm
• C. 200ppm
• D. None of these

Answer 1

The correct option is A 300ppm

From pie chart, we can see that the content of carbon dioxide is 25 % which is equal to 500pm​
So, total gas present in the atmosphere​
​
$=\frac{500\times 100}{25}=2000ppm$
​
Oxygen content is 15% $=\frac{2000\times 15}{100}=300ppm$