![]() ![]() Saturated aliphatic (or acyclic) hydrocarbons are called alkanes. Saturated aliphatic hydrocarbons contain carbon-carbon and carbon-hydrogen single bonds, while unsaturated aliphatic hydrocarbons contain carbon-carbon multiple bonds – double bonds, triple bonds or even both.Ĭyclic hydrocarbons are divided into two main classes Depending upon the types of carbon – carbon bonds present, they can be further classified into two main categories: On the basis of carbon skeleton, hydrocarbons are divided into two main classes:Īliphatic hydrocarbons are open-chain or acyclic compounds. Hydrocarbons are also used as the starting materials for manufacture of many dyes and drugs. Higher hydrocarbons are used as solvents for paints. Hydrocarbons are also used for the manufacture of polymers like polythene, polypropene, polystyrene, etc. Thus hydrocarbons are the important sources of energy. Petrol and CNG operated automobiles cause less pollution.Īll these fuels are basically a mixture of hydrocarbons. Automobiles need fuels like petrol, diesel and CNG. Kerosene oil is also used as a domestic fuel but it causes some pollution. LPG is used as a domestic fuel with the least pollution. The gas after compression is known as CNG. Natural gas is found in upper strata during drilling of oil wells. Coal gas is obtained by the destructive distillation of coal. Petrol, diesel, and kerosene oil are obtained by the fractional distillation of petroleum found under the earth’s crust. ![]() This is also a fuel, obtained by liquefaction of natural gas. The following are the familiar examples of fuels: LPG (liquefied petroleum gas), CNG (compressed natural gas) and LNG (liquefied natural gas). As fuels, hydrocarbons play a key role in our daily life. As the name implies, hydrocarbons are organic compounds containing carbon and hydrogen only. ![]()
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