MCQ
The correct $IUPAC$ name of $2-$ethyl$-3-$pentyne is :
- A$3-$methyl hexyne$-4$
- B$4-$ethyl pentyne$-2$
- ✓$4-$methyl hexyne$-2$
- DNone of these

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$(i)\,\,RC \equiv \mathop C\limits^ \ominus $
$(ii)\,\,[IMAGE]$
$(iii)\,\,{R_2}C = \mathop C\limits^ \ominus H$
$(iv)\,\,{R_3}C - \mathop C\limits^ \ominus {H_2}$