(a)
Interpretation:
The type of colloid in milk is to be determined.
Concept introduction:
The colloidal solution is a mixture in which the substances are suspended in a fluid. It can exist in solid, liquid or gas.
The colloidal solutions are classified into the following categories:
1. Foam: It is the solution of the gas in liquid like shaving cream.
2. Emulsion: It is liquid dispersed in liquid like milk.
3. Sol: It is solid dispersed in a fluid like blood.
4. Hydrocolloid: It is fluid dissolved in water like gelatin.
(b)
Interpretation:
The type of colloid in fog is to be determined.
Concept introduction:
The colloidal solution is a mixture in which the substances are suspended in a fluid. It can exist in solid, liquid or gas.
The colloidal solutions are classified into the following categories:
1. Foam: It is the solution of the gas in liquid like shaving cream.
2. Emulsion: It is liquid dispersed in liquid like milk.
3. Sol: It is solid dispersed in a fluid like blood.
4. Hydrocolloid: It is fluid dissolved in water like gelatin.
(c)
Interpretation:
The type of colloid in shaving cream is to be determined.
Concept introduction:
The colloidal solution is a mixture in which the substances are suspended in a fluid. It can exist in solid, liquid or gas.
The colloidal solutions are classified into the following categories:
1. Foam: It is the solution of the gas in liquid like shaving cream.
2. Emulsion: It is liquid dispersed in liquid like milk.
3. Sol: It is solid dispersed in a fluid like blood.
4. Hydrocolloid: It is fluid dissolved in water like gelatin.
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