The $IUPAC$ name of $CH_3-CH_2-CH(CH_3)-CH_2-CH_2-CH_3$ is

What is the correct structure of $4-$bromo$-3-$methylbut$-1-$ene?

The $IUPAC$ name of the structure is:

State True or False for the following statements:
$(i)$ Molecular formula of Anisole: $C_6H_5OCH_3$.
$(ii)$ Acetone is a common name of $CH_3COCH_3$.
$(iii)$ Molecular formula of benzene is $C_6H_6$.
$(iv)$ Formula of $C_2H_6$ is methane.
$(v)$ The formula of pentane and propane are $C_5H_{12}$ and $C_3H_8$ respectively.

Which among the following is the correct $IUPAC$ name of isoamylene?

Write the $IUPAC$ name of the given compound.