Multiple choice Which of the following decreases by increasing the temperature of an aqueous solution? Molality Molarity Mole fraction P.P.M (parts per million) Reveal answer Fill a bubble to check yourself B Correct answer Explanation This option is correct as in molarity there is volume term which alters with respect to temperature, M=no. of moles of solute/volume of solution in litres. By increasing the temperature volume expands and molarity decreases.