What is the correct $IUPAC$ name for a molecule that has two amino groups $(-NH_2)$ in opposing $(para)$ locations around a benzene ring?

Select the correct $IUPAC$ name of pyrogallol.

Give the $IUPAC$ name of the following compound.

Write $IUPAC$ names of the following compounds:
$(i)$ $(CH_3)_2CH-CH=CH-CH_2-CH=C(CH_3)-CH(C_2H_5)-CH_3$
$(ii)$ The structure is shown below:
$(iii)$ $CH_2=C(CH_2CH_2CH_3)_2$
$(iv)$ $CH_3-CH(CH_3)-CH=C(C_2H_5)-CH_2-CH(CH_3)-CH_2CH_2CH_3$

The $IUPAC$ name of Tartaric acid is

In $IUPAC$ nomenclature, the correct order of decreasing priority of functional groups is: