Advertisements
Advertisements
प्रश्न
An emulsion cannot be broken by:
(i) heating
(ii) adding more amount of dispersion medium
(iii) freezing
(iv) adding emulsifying agent
Advertisements
उत्तर
(ii) adding more amount of dispersion medium
(iv) adding emulsifying agent
Explanation:
An emulsion cannot be broken by adding more amount of dispersion medium and emulsifying agent. It can be broken by heating, freezing, etc.
APPEARS IN
संबंधित प्रश्न
Choose the correct option.
The size of colloidal particles lies between ______.
Define the term Electrophoresis.
Explain Bredig’s arc method.
Explain the term emulsion and types of emulsions.
Draw labelled diagram Tyndall effect.
Draw labelled diagram of Bredig’s arc method.
In coagulation of positively charged ferric hydroxide sol, the most and least effective ions are ____________ and ____________ respectively.
Which of the following is a heterogeneous mixture?
Which of the following statements is CORRECT?
The order of coagulating power of following ions in the coagulation of a positive sol is:
i. \[\ce{PO^{3-}_4}\]
ii. \[\ce{SO^{2-}_4}\]
iii. \[\ce{[Fe(CN)6]^{4-}}\]
iv. \[\ce{NO^-_3}\]
Froth is a colloidal solution of ____________.
Gelatin which is a peptide is added in icecreams. What can be its role?
What is collodion?
How do emulsifying agents stabilise the emulsion?
How does the precipitation of colloidal smoke take place in Cottrell precipitator?
Match the items of Column I and Column II.
| Column I | Column II |
| (i) Butter | (a) dispersion of liquid in liquid |
| (ii) Pumice stone | (b) dispersion of solid in liquid |
| (iii) Milk | (c) dispersion of gas in solid |
| (iv) Paints | (d) dispersion of liquid in solid |
Toluene is oxidised to benzoic acid by
The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following processes can explain this?
Which of the following electrolytes will be most effective in coagulating negative sol?
Identify positively charged sol from following.
