Discussion Forum
Que. | The main source of air pollution is |
a. | Oxides of Sulphur |
b. | Oxides of Carbon |
c. | Oxides of Nitrogen |
d. | All of above |
Correct Answer:All of above
|
Que. | The main source of air pollution is |
a. | Oxides of Sulphur |
b. | Oxides of Carbon |
c. | Oxides of Nitrogen |
d. | All of above |
Correct Answer:All of above
|