Advertisements
Advertisements
प्रश्न
Coal and petroleum are formed from the dead remains of organisms and are known as ______.
उत्तर
Coal and petroleum are formed from the dead remains of organisms and are known as fossil fuels.
APPEARS IN
संबंधित प्रश्न
Name the petroleum product used for surfacing of roads.
Process of separation of different constituents from petroleum is called ______.
Kerosene is not a fossil fuel.
Explain the process of formation of petroleum.
Which fossil fuel is conserved when we save on electricity?
Fill in the following blank with suitable word :
When a fuel burns in an insufficient supply of air, then some poisonous gas called ......... is also produced.
List the products of combustion of fossil fuels. What are their adverse effects on the environment?
What are fossil fuels?
Write two disadvantages of burning fossil fuels.
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
