1. Natural
1.1. Coal gas was first used for street lighting for the first time in London in 1810 and in New York around 1820. Now a days , it is used as a source of heat rather than light.
1.2. Inexhaustible Resources
1.2.1. Coal
1.2.1.1. 1. Hard as stone. 2. Black in colour. 3. Brittle. 4. Fossil fuel. 5. Used for electricity and as fuel.
1.2.1.2. Coke
1.2.1.2.1. 1. Tough 2. Porous 3. Black substance 4. Almost pure form of carbon
1.2.1.2.2. Used in manufacture of steel and in the extraction of many metals.
1.2.1.3. Coal Tar
1.2.1.3.1. 1. Black in colour 2. Thick liquid 3. Unpleasant smell 4. Mixture of more than 200 substances
1.2.1.3.2. Used to manufacture daily materials like synthetic dyes , drugs , explosives , perfumes plastics , paints , photographic materials , roofing materials , etc. Also the interesting naphthalene balls are obtained from coal tar .
1.2.1.4. Coal Gas
1.2.1.4.1. Coal gas is obtained during the processing of coal to get coke.
1.2.1.4.2. Used as fuel in many industries situated near the coal processing plant
1.2.2. Petroleum
1.2.2.1. 1. Darky oily liquid 2. Unpleasant odour
1.2.2.2. Petrol and diesel are obtained from a natural resource called petroleum.
1.2.2.3. Its derived from petra(rock) and oleum(oil).
1.2.2.4. The world's first oil well was drilled in Pennsylvania, USA , in 1859 . Eight years later , in 1867 , oil was struck at Makum in Assam . In India , oil is found in Assam , Gujarat , Mumbai High and in the river basins of Godavari and Krishna.
1.2.2.5. Petroleum Gas in liquid form(LPG)
1.2.2.5.1. Fuel for home and industry
1.2.2.6. Petrol
1.2.2.6.1. 1. Motor fuel 2. Aviation fuel 3. Solvent for dry cleaning
1.2.2.7. Kerosene
1.2.2.7.1. Fuel for stoves , lamps and jet aircrafts
1.2.2.8. Diesel
1.2.2.8.1. Fuel for heavy motor vehicles and electric generators
1.2.2.9. Lubricating oil
1.2.2.9.1. Lubrication
1.2.2.10. Paraffin wax
1.2.2.10.1. Ointments , candles , vaseline etc.
1.2.2.11. Bitumen
1.2.2.11.1. Paints and road surfacing
1.2.3. Natural gas
1.2.3.1. 1. Fossil fuel 2. Easy to transport through pipes 3. Stored under high pressure as compressed natural gas(CNG).
1.2.3.2. CNG is used for power generation(now being used as fuel for transport because it is less polluting )
1.2.3.3. CNG can be used directly for burning in homes and factories
1.2.3.3.1. Such a network of pipeline exists Vadodra(Gujarat) .
1.2.3.4. Used for production of chemicals and fertilizers .
1.2.3.5. Natural gas is has been found in Tripura , Rajasthan , Maharashtra and in the Krishna Godaveri delta.