# One molal solution indicates

$\begin{array}{1 1}(a)\;\text{One mole of solute present in 1liter of the solution}\\(b)\;\text{One mole of the solute present in 1000gm of the solvent}\\(c)\;\text{One gram equivalent of solute present in 1000ml of solution}\\(d)\;\text{One gram equivalent of solute present in 1000gm of the solvent}\end{array}$

Molality by definition is the number of gram moles of a substance per 1000 grams of solvent.
Hence (b) is the correct answer.
edited Jul 16, 2014