The number of $C-C$ sigma bonds in the compound is:

The correct $IUPAC$ name for the given structure is:-

The $IUPAC$ name of $(CH_3)_2CHCH(CH_3)_2$ is:

$IUPAC$ name of $CH_3CHO$ is

Write the $IUPAC$ name of the given compound.

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