Medium
Which of the following is a correct statement?
- ABrownian motion destabilises sols.
- BAny amount of dispersed phase can be added to emulsion without destabilising it.
- CMixing two oppositely charged sols in equal amount neutralises charges and stabilises colloids.
- DPresence of equal and similar charges on colloidal particles provides stability to the colloidal solution.
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Similar Questions
Which of the following is an emulsion?
Consider the following statements:
Statement-$I$ : Gold sol is prepared by Bredig's arc method.
Statement-$II$ : Bredig's arc method involves both dispersion and condensation.
Statement-$I$ : Gold sol is prepared by Bredig's arc method.
Statement-$II$ : Bredig's arc method involves both dispersion and condensation.
The following data is obtained for coagulating a positively charged sol in $2$ hours:
Conc. of $Cl^{-}$ in $mol \cdot L^{-1}$ Result $5 \times 10^{-5}$ Sol not precipitated $6 \times 10^{-5}$ Sol not precipitated $7 \times 10^{-5}$ Sol precipitated $8 \times 10^{-5}$ Sol precipitated $1 \times 10^{-4}$ Sol precipitated
What is the coagulating value of electrolyte for this sol?
| Conc. of $Cl^{-}$ in $mol \cdot L^{-1}$ | Result |
| $5 \times 10^{-5}$ | Sol not precipitated |
| $6 \times 10^{-5}$ | Sol not precipitated |
| $7 \times 10^{-5}$ | Sol precipitated |
| $8 \times 10^{-5}$ | Sol precipitated |
| $1 \times 10^{-4}$ | Sol precipitated |
What is the coagulating value of electrolyte for this sol?
Assertion $(A)$: The aggregate of carboxylate ions of fatty acids form a spherical shape. Reason $(R)$: Soap helps in emulsification and washing away of oils.
Lyophilic sols are more stable than lyophobic sols because:
DifficultJEE MAIN 2021
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