Identify the correct reagents that would bring about the following transformation.
1
i H2O/H+
ii CrO3
2
i BH3
ii H2O2/\(\rm \overset{\Theta}{O}H\)
iii PCC
3
i BH3
ii H2O2/\(\rm \overset{\Theta}{O}H\)
iii alk.KMnO4
iv \(\rm H_3O^{\oplus}\)
4
i H2O/H+
ii PCC
5
Question Not Attempted