Facts 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)