Question

12. List -any Three Properties By
which a calloidal solution can be
reconginzed​

Answer 1

$\LARGE{ \underline{ \boxed{ \rm{ \orange{Colloidal \: solutions}}}}}$

Characteristics (To be recognized):-

• It appears homogenous, but it is a heterogeneous solution. The particles cannot be seen because they are too small.
• The particles of colloid do not settle down when left undisturbed, Hence it is stable in nature.
• If we will try separating the particles, we can't separate the particles using filter paper(Filtration), We will fail. We can separate by using Centrifugation.
• It scatters the light passing through it. As a result, The path of light is visible in case of colloidal solution.

Other properties:-

• The particle size range between 10‐⁷ cm to 10‐¹⁴ cm. Here, Dissolved substance is known as Dispersed phase and medium is known as Dispersed medium.
• The colloids are translucent in nature.
• The particles follow Brownian movement. It travels in a zig zag path or in heither-either way. It is due to hitting and colliding of the particles.

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Answer 2

Properties Of Colloids :-

• The particle size in collloids varies between 1 to 1000 nanometers.

• The particles of colloids can be filtered from a filter paper.

• Collloids are relatively stable in nature.

• They are heterogeneous mixtures but appears to be homogeneous mixture.

• Tyndall Effect Can be passed through collloids. (Tyndall Effect is the scattering of light.)