Ans. A dilute solution is a solution that contains a small amount of solute relative to the amount of solvent. It is the opposite of a concentrated solution, which contains a large amount of solute. The concentration of a dilute solution is usually expressed in terms of molarity, which is the number of moles of solute per liter of solution. Dilute solutions are commonly used in chemical reactions, where small amounts of reactants are required to avoid side reactions or waste.