The solvent is usually referred to as the component of a solution which is present:

as one liter
as the larger quantity
as the liquid which dissolves a solid
as the smaller quantity

As the larger quantity

As the liquid which dissolves a solid

Explanation:

Solvent is the substance mostly in liquid form which dissolves the solute(e.g solid). The solvent also, is larger when compared to the solute.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

може ли да зареждате повече информация, моля