Colloids

Example for colloid is

• Starch

• Urea

• Sugar

Diameter of colloidal particle is

• 3X10^-4 to 1X10^-7

• 2X10^-4 to 1X10^-7

• 4X10^-3 to 2X10^-4

• 3X10^-2 to 2X 10^-4

Lyophilic means

• Colloidal solution

• Solvent loving

• Solvent hating

• Solution

Dispersion method means

• Large particle to colloidal size

• Small particle to colloidal size

• Dissolving colloidal particle

• precipitate colloidal particle

Which one of the following is a optical property of colloid

• Brownian movement

• Electrophoresis

• Tyndall effect

• Electro-osmosis

Example for emulsion is

• Sugar

• Butter

• Sodium chloride

• Hydrochloric acid

Artificial rain have been obtained by throwing electrically charged

• Ammonia

• Potash

• Sand

• Lime stone

Gels are

• Liquid in solid

• Solid in liquid

• Liquid in gas

• Gas in liquid

Example for gels

• Milk

• Curd

• Salt solution

• Paint

Lyophobic colloid means

• Solvent loving

• Solvent hating

• No solvent

• dissolve in solvent