MCQ
$IUPAC$ name of is


- ✓But $-3-$ enoic acid
- BBut $-1-$ enoic acid
- CPent $-4-$ enoic acid
- DProp $-2-$ enoic acid

So, the correct name is: but -$3$ - enoic acid.
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$\mathop {C{H_2} = C{H_2}}\limits_{(I)} $ $\mathop {C{H_3} - CH = C{H_2}}\limits_{(II)} $ (figure) $\mathop {C{H_2} = CH - Cl}\limits_{(IV)} $
