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प्रश्न
How are colloidal solutions different from true solutions and suspensions?
फरक स्पष्ट करा
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उत्तर
| Property | True solution | Colloidal solution | Suspension |
| Particle size | In a true solution, the particle size is less than 1 nanometer. | In a colloidal solution, the particle size lies between 1 nanometer and 1000 nanometers. | In a suspension, the particle size exceeds 1000 nanometers. |
| Appearance | A true solution appears transparent to the naked eye. | A colloidal solution appears translucent. | A suspension appears opaque or cloudy. |
| Stability | A true solution is stable; its particles do not settle on standing. | A colloidal solution is also stable and its particles do not settle on standing. | A suspension is unstable; its particles settle down on standing. |
| Filtration | The particles of a true solution pass through filter paper easily. | The particles of a colloidal solution pass through filter paper but not ultrafilters. | The particles of a suspension do not pass through ordinary filter paper. |
| Tyndall effect | A true solution does not show the Tyndall effect. | A colloidal solution shows the Tyndall effect due to light scattering. | A suspension may show the Tyndall effect if the particles are large enough. |
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