Fact to remember—-Name of the gas

1. Gas used in LPG–Butane, Propane and Ethane
2. Tear Gas—Ammonia (NH3)
3. Gas with foul smell—Hydrogen Sulphide (H2S)
4. Laughing gas—Nitrous Oxide (N2O)
5. Gas used in refrigeration—Freon
6. Freon, the gas used in refrigeration is chemically known as—Diflouro Dichloro Methane
7. Gobar gas is a mixture of—Methane, CO2 and hydrogen
8. Gas mixed with oxygen and given to patients with restricted breathing— Helium
9. A major air pollutant, the percentage presence of which is checked in vehicle pollution test—Carbon monoxide
10. The gas which is responsible for the formation of brown air in traffic congested cities— Nitrogen oxide
11. Major gaseous pollutant of areas located near thermal power station—-Suphur dioxide
12. Natural gas—Mainly methane with small quantities of ethane and propane
13. Strong smelling substance added to LPG—Ethyl Mercaptan or Ethanethiol
14. Gases responsible for depletion of ozone layer—Chloroflouro carbons
15. Gas used in gas welding and also artificial ripening of fruits—Acetylene
16. Gas used in electric bulbs—Argon
17. Gas used in flourescent lamps—Mercury vapour
18. Gas known as marsh gas—Methane
19. Gas responsible for acid rain—Sulphur dioxide
20. Gas most abundant in earth’s atmosphere—-Nitrogen (78%)
21. Percentage of oxygen in earth’s atmosphere—21% (appx)