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Bihar Police Constable Model Paper 5
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© examsnet.com
Question : 39
Total: 100
The natural source of hydro-carbon is
Crude oil
Biomass
Coal
Carbohydrates
Validate
Solution:
Hydrocarbons are highly combustible and produce carbon dioxide, water, and heat when burned.
Hence, hydrocarbons are highly effective as a source of fuel.
Hydrocarbons:Compounds made of carbon and hydrogen atoms only, are called hydrocarbons. The natural source of hydrocarbons is petroleum.
Saturated hydrocarbons: The hydrocarbons in which carbon atoms are singly bonded are called saturated hydrocarbons.
Saturated hydrocarbons are also called alkanes or paraffin.
The general formula of alkane–
C
n
H
2
n
+
2
Unsaturated hydrocarbons: The hydrocarbons in which carbon atoms are either doubly or triply bonded are called unsaturated hydrocarbons.
Doubly bonded (carbon atoms) hydrocarbons are called alkenes.
The general formula of alkene is
C
n
H
2
n
.
Triply-bonded carbon: Hydrocarbons containing at least one carbon-carbon triple bond between two carbon atoms are called alkynes.
The general formula of alkynes is
C
n
H
2
n
−
2
.
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