GK about Chemistry- Gases and its composition

Chemistry- Gases and its composition 

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

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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)