SCIENCE
ENVIRONMENTAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following statements best describes the composition of air?
|
|
air is only made up of nitrogen
|
|
|
air is only made up of oxygen
|
|
|
air is only made up of carbon dioxide
|
|
|
air is made up of a mixture of different gasses
|
Explanation:
Detailed explanation-1: -Air is a heterogeneous mixture of gases because it contains different gaseous substances in unequal amounts.
Detailed explanation-2: -Air is a mixture of gases-major three components are oxygen, nitrogen and argon.
Detailed explanation-3: -Air is made up of different gases like nitrogen, oxygen, carbon dioxide and other inert gases. Nitrogen has the highest percentage of 78.09%, followed by oxygen of 20.95%, argon of 0.93%, carbon dioxide of 0.04%, and other gases in meagre amounts.
Detailed explanation-4: -Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. Which statement best describes these three components of air? They are all classified as pure substances.
There is 1 question to complete.