1
Q
Composition of nitrogen (N₂):
A
78%
2
Q
Composition of oxygen (O₂):
A
21%
3
Q
Composition of argon (Ar):
A
0.9%
4
Q
Composition of carbon dioxide (CO₂):
A
0.04%
5
Q
Composition of others:
A
0.06%
6
Q
Sulfur dioxide source, impact and prevention:
A
- Burning industry
- Acid rain
- Reduce industry that produces it
7
Q
Nitrogen dioxide source, impact and prevention:
A
- High temperature reaction of oxygen and nitrogen
- Acid rain
- Catalytic converter
8
Q
Carbon monoxide source, impact and prevention:
A
- Exhaust gas
- Block oxygen being absorbed by body
- Catalytic converter
9
Q
Methane source, impact and prevention:
A
- Flatulence/Fart
- Green house gas
- Eat less red meat
10
Q
Simple route of water treatment:
A
Reservoir → Filtration → Chlorination → Storage
(to let the (kill bacterial
insoluble germs)
sink in)
11
Q
______ is the process of making seawater drinkable.
A
Desalination
12
Q
Use of water in industry:
A
- Solvent
* Wash machines
13
Q
Use of water in house:
A
- Cooking
* Washing
Chemistry
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