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Help me solve this Among the following, the false statement is :

Among the following, the false statement is :

  • Option 1)

    Tyndall effect can be used to distinguish between a colloidal solution and a true solution :

  • Option 2)

    Latex is a colloidal solution of rubber particles which are positively charged 

  • Option 3)

    It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane. 

  • Option 4)

    Lyophilic sol can be caogulated by adding an electrolyte.

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The reason for the Tyndall Effect -

The Tyndall effect is due to the fact that colloidal particles scatter light in all directions in space. This scattering of light illuminates the path of the beam in the colloidal dispersion. The bright cone of the light is called Tyndall cone.

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Lyophilic Colloids -

The word 'lyophilic' means liquid loving. colloidal sols directly formed by mixing substances like gum, gelatin, starch, rubber, etc. with a suitable liquid are called lyophilic solutions.

-As we have learned in colloids,

We know that colloidal solution of rubber (Latex) ax negatively charged.

 

 


Option 1)

Tyndall effect can be used to distinguish between a colloidal solution and a true solution :

Option 2)

Latex is a colloidal solution of rubber particles which are positively charged 

Option 3)

It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane. 

Option 4)

Lyophilic sol can be caogulated by adding an electrolyte.

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