Advertisements
Advertisements
प्रश्न
Comment on the statement that “colloid is not a substance but a state of substance”.
उत्तर
Common salt (a typical crystalloid in an aqueous medium) behaves as a colloid in a benzene medium. Hence, we can say that a colloidal substance does not represent a separate class of substances. When the size of the solute particle lies between 1 nm and 1000 nm, it behaves as a colloid.
Hence, we can say that colloid is not a substance but a state of the substance which is dependent on the size of the particle. A colloidal state is intermediate between a true solution and a suspension.
APPEARS IN
संबंधित प्रश्न
Define the following with a suitable example, of each:
Gel
Define the term Electrophoresis.
Write a note on the Tyndall effect.
Write a note on Brownian motion.
Write a note on Types of emulsion.
Explain Electrophoresis diagramatically.
Explain the term emulsion and types of emulsions.
Maximum coagulation power is in ____________.
Mixing of two oppositely charged sols leads to ____________.
Which of the following can form colloidal sol with water?
The movement of colloidal particles towards respective electrode under electric field is called ______.
Freshly prepared precipitate sometimes gets converted to colloidal solution by ______.
Which of the following substances will precipitate the negatively charged emulsions?
(i) \[\ce{KCl}\]
(ii) glucose
(iii) urea
(iv) \[\ce{NaCl}\]
Gelatin which is a peptide is added in icecreams. What can be its role?
What is collodion?
A colloid is formed by adding \[\ce{FeCl3}\] in excess of hot water. What will happen if excess sodium chloride is added to this colloid?
On the basis of Hardy-Schulze rule explain why the coagulating power of phosphate is higher than chloride.
Fog is a colloidal solution of ______.
Identify the colloidal molecule containing hydrophilic head and hydrophobic tail within it.
