Difficult
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.
Gem stones,paints,smoke,cheese,milk,hair cream,insecticide sprays,froth,soap lather.
- A$4$
- B$6$
- C$5$
- D$9$
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$\mathop {K_2SO_4}\limits_{(I)}$ $\mathop {CaCl_2}\limits_{(II)}$ $\mathop {Na_3PO_4}\limits_{(III)}$ $\mathop {AlCl_3}\limits_{(IV)}$
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Statement-$II$ : Bredig's arc method involves both dispersion and condensation.
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