Cheese is a colloidal solution of ___________.
Cheese is a colloidal solution of ___________.
The correct option is B Liquid in solid
Colloidal solution: The solution in which the size of a solute particle is between 1nm to 10nm.
It is a heterogeneous solution but due to the very small size of a solute particle, it seems like a homogeneous solution.
Properties of a colloidal solution:
- It is a heterogeneous solution.
- It shows the Tyndal effect( the path of light is visible in a colloidal solution).
- Brownian movement(Zig-zag motion of a particle).
- It shows a colligative property.
- Shows electrophoresis( the positive and negative charge separates on the electrophoresis plate).
- They are more stable than the suspension.
The explanation for the correct option:
Cheese is a colloidal solution of liquid in a solid.
In the case of cheese, all its fat particles are present in solid form and dissolve in liquid that is in water.
Cheese is a solid emulsion in which liquid is the solute and solid is the solvent.
The explanation for incorrect option:
Option A:
Solid in solid: The example of pigmented plastic is a colloidal solution of solid in solid as the dispersed medium is solid and the dispersion medium is also solid. It is termed solid suspension.
Option C:
When the dispersed phase is solid and the dispersion phase is liquid, then it is termed as sol.
For example the silver iodide sol.
Option D:
When the dispersed medium is gas and the dispersion medium is solid the colloidal solution is termed as a solid foam.
For example- rubber.
Therefore the correct option is option B.
Liquid in solid
Colloidal solution: The solution in which the size of a solute particle is between 1nm to 10nm.
It is a heterogeneous solution but due to the very small size of a solute particle, it seems like a homogeneous solution.
Properties of a colloidal solution:
- It is a heterogeneous solution.
- It shows the Tyndal effect( the path of light is visible in a colloidal solution).
- Brownian movement(Zig-zag motion of a particle).
- It shows a colligative property.
- Shows electrophoresis( the positive and negative charge separates on the electrophoresis plate).
- They are more stable than the suspension.
The explanation for the correct option:
Cheese is a colloidal solution of liquid in a solid.
In the case of cheese, all its fat particles are present in solid form and dissolve in liquid that is in water.
Cheese is a solid emulsion in which liquid is the solute and solid is the solvent.
The explanation for incorrect option:
Option A:
Solid in solid: The example of pigmented plastic is a colloidal solution of solid in solid as the dispersed medium is solid and the dispersion medium is also solid. It is termed solid suspension.
Option C:
When the dispersed phase is solid and the dispersion phase is liquid, then it is termed as sol.
For example the silver iodide sol.
Option D:
When the dispersed medium is gas and the dispersion medium is solid the colloidal solution is termed as a solid foam.
For example- rubber.
Therefore the correct option is option B.
