Here are some results of solutions tested with universal indicator paper Sulphuric acid : Red

Metal polish : Dark blue


Washing-up liquid : Yellow


Milk of magnesia : Light blue


Oven cleaner : Purple


Car battery acid : Pink


Arrange the solutions in order of their increasing pH values (starting with the one with the lowest pH).

Sulphuric acid(Acidic) < Car battery acid(Acidic) < Washing-up liquid(Slightly acidic) < Milk of magnesia(Basic) < Metal polish(Basic)< Oven cleaner(Basic).
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