Coal and petroleum Worksheet-9
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True / False:
Explanation: Long time period is required for the formation of fossil fuels. The conditions required cannot be created in laboratory hence Fossil fuels cannot be made in Laboratory.
Explanation: CNG is a cleaner fuel than petrol.
Explanation: Coke contains 98% carbon.
Explanation: Coal tar is a brown or black liquid of extremely high viscosity. Coal tar is among the by-products obtained in the manufacture of coke. Coal tars are complex and variable mixtures of phenols, polycyclic aromatic hydrocarbons (PAHS), and heterocyclic compounds, about 200 substances in all.
Explanation: Kerosene is a fossil fuel as it is obtained as one of the fractions of refining of petroleum.