Which statement is correct about both propan-1-ol and propan-2-ol?
They can both be oxidised by reaction with acidified potassium dichromate(VI) to form a carboxylic acid.
They can both be formed by nucleophilic substitution of 1-chloropropane with hot aqueous sodium hydroxide.
They can both be dehydrated to form propene.
They both have three peaks in their 1H^{1}\text{H}1H NMR spectra.
