ENVIRONMENTAL CHEMISTRY-AIR

1. Which gas has the highest percentage in the air?

 
 
 
 

2. Most air pollution is caused by:

 
 
 
 

3. Which is reddish brown gas?

 
 
 
 

4. Which is reddish brown gas?

 
 
 
 

5. Which is/are responsible for acid rain?

 
 
 
 

Question 1 of 5