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Question

IUPAC nomenclature of CH3CH2CCH is

A
But-4-yne
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B
Pent-2-yne
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C
Butyne
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D
But-2-yne
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Solution

The correct option is C Butyne
There are four carbon atoms in the longest chain thus word root is 'But'. It has triple bond on first carbon atom, sothe prefix will be 'yne'. Hence, the IUPAC name of the given compound is Butyne.

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