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Q 1/10
Score 0
Highest percentage of air consists of...
30
Carbon dioxide
Noble gas
Oxygen
Nitrogen
Q 2/10
Score 0
Air pollution causes...
30
tsunami
soil erosion
global warming
hearth disease
10 questions
Q.
Highest percentage of air consists of...
1
30 sec
Q.
Air pollution causes...
2
30 sec
Q.
Green House gas is...
3
30 sec
Q.
The percentage of nitrogen is...
4
30 sec
Q.
The percentage of oxygen is...
5
30 sec
Q.
Chlorofluorocarbon is used in..
6
30 sec
Q.
Which of the following is necessary for a substance to burn?
7
30 sec
Q.
Carbon monoxide is a pollutant emitted from the car exhaust system. Which of the following reasons explain why carbon monoxide is considered as an air pollutant?
8
30 sec
Q.
Which of the following substances is not found in a clean air sample?
9
30 sec
Q.
120 cm3 of air is heated with phosphorus to form phosphorus (V) oxide in the air. After the reaction, what is the volume of air which remained?
