Question

Name the techenique by which we can prepare a colloidal solution of starch in water

Answer 1

boil the solution for a few minute and filter it once it cools to room temperature. the filtrate obtain is a colloidal solution of starch. The colloid of starch is prepared by dispersion method. 2-3 g of powdered/crushed starch is dissolved in 3- 4 ml of water to make a thin paste.