Which does not show the Tyndall effect?

1. Emulsion

2. Blood

3. Milk

4. Sugar solution

Butter is a colloid form in which:

1. fat is dispersed in solid casein

2. fat globules are dispersed in water

3. water is dispersed in fat

4. suspension of casein is in water

The cotterells precipitator is used to :

1. neutralize charge on carbon particles in air in smoke

2. coagulate carbon atoms of smoke

3. bring in cataphoresis in carbon particles

4. all of the above

Foam is a colloidal solution of:

1. Gaseous particles dispersed in gas               

2. Gaseous particles dispersed in a liquid           

3. Solid particles dispersed in a liquid

4. Solid particles dispersed in gas

A liquid aerosol is a colloidal system of:

1. a liquid dispersed in a solid

2. a liquid dispersed in a gas

3. a gas dispersed in a liquid

4. a solid dispersed in a gas