Air and Atmosphere

Air and Atmosphere
When methane is combusted with oxygen, the products produced are
nitrogen and oxygen
carbon dioxide and water
oxygen and water
many gases
Author: rikazzz Comment
Air and Atmosphere
To perform fractional distillation of air, it must be liquefied and then purified to remove
dust
molecule
atom
rust
Author: rikazzz Comment
Air and Atmosphere
Air is important because it is the prime cause of life on
Mars
Earth
Jupiter
Neptune
Author: rikazzz Comment
Air and Atmosphere
When a gas is cooled or compressed it becomes a
solid
gas
liquid
semi-solid
Author: rikazzz Comment
Air and Atmosphere
Breathing is a process that refers to the inhaling and exhaling of
gas
air
molecule
proton
Author: rikazzz Comment
Air and Atmosphere
The mixture important for human life and combustion is
carbon
air
zinc
nitrogen
Author: rikazzz Comment
Air and Atmosphere
An odorless, invisible gas that makes about 20%-22% of the earth’s atmosphere is known as
oxygen
nitrogen
argon
carbon
Author: rikazzz Comment
Air and Atmosphere
The percentage composition of nitrogen in air is
58%
68%
78%
88%
Author: rikazzz Comment
Air and Atmosphere
The process of trapping some of the heat from the sun to maintain the life on earth is known as
equilibrium
greenhouse effect
none of them
global warming
Author: rikazzz Comment
Air and Atmosphere
The condensation point of oxygen gas is
(-113°C)
(-133°C)
(-183°C)
(-143°C)
Author: rikazzz Comment

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