UPPSC 2017 General Studies I Solved Paper

Question : 81 of 150

Marks: +1, -0

Which of the following is considered to be the optimum concentration of carbon dioxide for natural balance in atmosphere?

0.02 per cent
0.03 per cent
0.04 per cent
0.05 per cent

Validate

Solution:

(c) The Earth’s early atmosphere is believed to have been comprising mainly carbon dioxide with little or no oxygen gas. The Earth’s atmosphere today contains around 21 per cent oxygen and about 0.04 per cent carbon dioxide.Carbon dioxide (

CO_2

) is the fifth most abundant gas in the atmosphere and, together with water vapour, probably the best known as the greenhouse gas.

Go to Question:

Prev Question

Next Question