Arrange the following functional groups in order of priority according to the $IUPAC$ system: $-CHO, -COOH, -SO_3H, -CONH_2$.

Which of the following groups is divalent?

What is the $IUPAC$ name of the following compound?

Write the $IUPAC$ name of the given compound.

The structure of $3-$methylpent$-2-$ene is

Name the following compounds according to the $IUPAC$ system:
$(i)$ $CH_3-CH(CH_2Cl)-CH(CH_2OH)-CH(CH_3)-CH_3$
$(ii)$ $CH_3-CH(CH_3)-CH_2-CH(OH)-CH(CH_2OH)-CH_3$
$(iii)$ $3-$Bromocyclohexanol (structure implied)
$(iv)$ $H_2C=CH-CH(OH)-CH_2-CH_2-CH_3$
$(v)$ $CH_3-C(CH_3)=C(Br)-CH_2OH$