Fact to remember | Name of the gas |
---|---|
Gas most abundant in earth's atmosphere | Nitrogen (78%) |
Percentage of oxygen in earth's atmosphere | 21% (appx) |
The lightest gas | Hydrogen |
The heaviest gas | Radon |
Tear Gas | Ammonia (NH3) |
Marsh gas | Methane |
Laughing gas | Nitrous Oxide (N2O) |
Natural gas | Mainly methane with small quantities of ethane and propane |
Gobar gas | Methane, CO2 and hydrogen |
Gas with foul smell | Hydrogen Sulphide (H2S) |
Gas mixed with oxygen and given to patients with restricted breathing | Helium |
A major air pollutant, the percentage presence of which is checked in vehicle pollution test | Carbon monoxide |
The gas which is responsible for the formation of brown air in traffic congested cities | Nitrogen Dioxide |
Major gaseous pollutant of areas located near thermal power station | Suphur dioxide |
Strong smelling substance added to LPG | Ethyl Mercaptan or Ethanethiol |
Gases responsible for depletion of ozone layer | Chloroflouro carbons |
Gas responsible for acid rain | Sulphur dioxide |
Gas used in gas welding and also artificial ripening of fruits | Acetylene |
Gas used in electric bulbs | Argon |
Gas used in flourescent lamps | Mercury vapour |
Gas used in LPG | Butane, Propane and Ethane |
Gas used in refrigeration | Freon (Diflouro Dichloro Methane) |
Gas used as an anaesthetic in dental surgery | Nitrous Oxide |