The reaction given is a chemical equation. It represents a chemical change where reactants combine to form products. The equation shows the reactants on the left-hand side and the products on the right-hand side.
In this particular equation, the reactants are 5SO2(g), 2KMnO4(aq), and 2H2O(l). The products are K2SO4, 2MnSO4(aq), and 2H2SO4(aq).
Now, to answer the question, the equation does not involve any purple solution or purple precipitate, so we can eliminate the first two options.
The products of the reaction are K2SO4, 2MnSO4(aq), and 2H2SO4(aq). None of these products is a colourless precipitate, so we can eliminate the third option as well.
Therefore, the correct answer is that the products give a colourless solution.