Fill in the following blanks :
(a) Milk is a .................... solution but vinegar is a .................... solution.
(b) A colloid is a ..................... mixture and its components can be separated by the technique known as ......................

(a) Milk is a colloidal solution but vinegar is a true solution.

(b) A colloid is a heterogeneous mixture and its components can be separated by the technique known as centrifugation.