The number of colloidal systems from the foll | vedclass

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(C) colloidal system with a liquid dispersion medium is known as an emulsion (if the dispersed phase is liquid) or a sol (if the dispersed phase is so

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$5$

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(C) colloidal system with a liquid dispersion medium is known as an emulsion (if the dispersed phase is liquid) or a sol (if the dispersed phase is solid).Let us classify the given systems:$1$. Gem stones: Solid sol (Solid in Solid)$2$. Paints: Sol (Solid in Liquid)$3$. Smoke: Aerosol (Solid in Gas)$4$. Cheese: Gel (Liquid in Solid)$5$. Milk: Emulsion (Liquid in Liquid)$6$. Hair cream: Emulsion (Liquid in Liquid)$7$. Insecticide sprays: Aerosol (Liquid in Gas)$8$. Froth: Foam (Gas in Liquid)$9$. Soap lather: Foam (Gas in Liquid)The systems with liquid as the dispersion medium are: Paints,Milk,Hair cream,Froth,and Soap lather.Total count = $5$.

The number of colloidal systems from the following,which will have 'liquid' as the dispersion medium,is $.........$.
Gem stones,paints,smoke,cheese,milk,hair cream,insecticide sprays,froth,soap lather.

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Assertion : Colloidal solutions are stable but colloidal particles do not settle down.
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$Statement-1$: Micelles are formed by surfactant molecules above the critical micellar concentration $(CMC)$.
$Statement-2$: The conductivity of a solution having surfactant molecules decreases sharply at the $CMC$.

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The number of colloidal systems from the following,which will have 'liquid' as the dispersion medium,is $.........$.Gem stones,paints,smoke,cheese,milk,hair cream,insecticide sprays,froth,soap lather.