Which amongst the following is an unsaturated hydrocarbon?
A
Ethyne
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B
Ethane
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C
Pentane
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D
Butane
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Solution
The correct option is A Ethyne
Unsaturated hydrocarbons have atleast one double or triple bond between their carbon atoms and are represented by '-ene' or '-yne' as suffix in their IUPAC name.
Here, ethyne (C2H2), the simplest alkyne is the only unsaturated hydrocarbon. Its structure is-