If there is no rotation of plane polarised light by a compound in a specific solvent, through to be chiral, it may mean than

The order of decreasing reactivity towards an electrophilic reagent, for the following would be
(i) benzene
(ii) toluene
(iii) chlorobenzene
(iv) phenol

For (i) I^$$-$$, (ii) Cl^$$-$$, (iii) Br^$$-$$, the increasing order of nucleophilicity would be

The IUPAC name of



is