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Why can’t we prepare petroleum in our laboratories ?
Petroleum oil cannot be prepared in our laboratories because it took millions of year to convert dead bodies of plants and animals to get converted in petroleum. Moreover the temperture and the pressure that they required is cannot be created in laboratories.
Describe how coal is formed from dead vegetation. What is this process called?
Fossil fuels are ________, ________ and ________.
Process of separation of different constituents from petroleum is called __________.
Least polluting fuel for vehicle is ________.
Fossil fuels can be made in the laboratory.
CNG is more polluting fuel than petrol.
Coke is almost pure form of carbon.
Coal-tar is a mixture of various substances.
Kerosene is not a fossil fuel.
Explain why fossil fuels are exhaustible natural resources?
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