Which of these is the solvent used in the case of an 'aqueous' solution?

Q. In aqueous solutions, the solvent used is _______.

Q. The solution that contains water as the solvent is called an aqueous solution. If carbon disulphide is a solvent in a given solution, then the solution is called:

Q. An 8% aqueous solution of urea (by mass of solvent) has an elevation in boiling point of $x_1$. 20% aqueous solution of glucose (by mass of solvent) has an elevation in boiling point of $x_2$. If these two solutions are mixed, then the elevation in boiling point is $x_3$.
Then,

Q. An aqueous solution is a solution in which the solvent is .