The $IUPAC$ name of $CH_3-CH=CH-COOH$ is

Write the $IUPAC$ names of the following structures:
$(i)$ $CH_3-CH=CH-CH(Br)-CH_3$
$(ii)$ $CH_2=C(CH_3)-CH(Br)-CH_3$
$(iii)$ $CH_3-CH=C(CH_3)-CH(Br)-CH_3$
$(iv)$ $CH_3-C(CH_3)=CH-CH_2Br$
$(v)$ $CH_3-CH=CH-CH_2Br$
$(vi)$ $CH_2=C(CH_3)-CH_2Br$

The $IUPAC$ name of the compound $HOOC-C(CH_3)=C(NH_2)-CH(Cl)-CH_3$ is:

The $IUPAC$ name of the following compound is:

Which of the following names is incorrect?

The structure of $3,4-$dimethylpent$-1-$en$-3-$ol is: