Which of the following is usually not an air-pollutant?
A). Hydrocarbons
B). Sulphur dioxide
C). Carbon dioxide
D). Nitrous oxide
Nitrous oxide
The six air pollutants are carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide.The combustion of gasoline and other hydrocarbon fuels in automobiles, trucks, and jet airplanes produces several primary air pollutants. Nitrous oxide (N2O), commonly known as laughing gas, is used in surgery and dentistry for its anaesthetic and analgesic effects.
2. The constituents of automobile exhaust that can cause cancer is/are :
3. Which one of the following minerals is found in pure form?
6. Diamond is harder than graphite because of
7. Which of the following elements has the lowest melting point?
8. The major constituent of air is
9. Which type of fire extinguisher is used for petroleum fire ?