The Atmosphere

The Atmosphere
The mass of atmosphere contained in the troposphere is about
10-20%
75-80%
90-100%
50-60%
Author: rikazzz Comment
Everyday Science
Percentage of helium in the air is
0.000624
0.000524
0.000724
0.000824
Author: rikazzz Comment
Everyday Science
Percentage of oxygen in the air is
0.78
0.21
0.0093
0.0004
Author: rikazzz Comment
Everyday Science
The atmosphere is divided in to
2 layers
3 layers
1 layer
4 layers
Author: rikazzz Comment
The Atmosphere
The temperature variation in the stratosphere is about
−5 °C to 50 °C
−5 °C to 50 °C
10 °C to 20 °C
−55 °C to −5 °C
Author: rikazzz Comment
The Atmosphere
Percentage of argon in the air is
0.78
0.21
0.0093
0.0004
Author: rikazzz Comment
The Atmosphere
The upset caused in the natural balance of concentration of greenhouse gases is called
pollution
global warming
atmospheric poisoning
earth heating
Author: rikazzz Comment
The Atmosphere
Ozone (O_?) comprises of
one oxygen atom
2 oxygen atoms
3 oxygen atoms
4 oxygen atoms
Author: rikazzz Comment
The Atmosphere
The atmospheric layer closest to the earth's surface is
troposphere
mesosphere
stratosphere
thermosphere
Author: rikazzz Comment
The Atmosphere
Solvents used for cleaning electronic circuit boards are
chlorofluorocarbons
carbons
fluorides
grease
Author: rikazzz Comment

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