How can the following conversions the be carried out?

cbse
haloalkanes

#1

How can the following conversions be carried out?
(i) Propene to propane-l-ol (ii) Benzyl alcohol to 2-phenyl ethanoic acid
(iii) Teri-butyl bromide to iso-butyl bromide (iv) Benzene to 4-bromonitrobenzene


#2