Advertisements
Advertisements
प्रश्न
Give reasons for the following observations:
Brownian movement provides stability to the colloidal solution.
Advertisements
उत्तर
Brownian motion counters the force of gravity acting on the colloidal particles and hence helps in providing stability to the colloidal sols by not allowing them to settle.
APPEARS IN
संबंधित प्रश्न
Define the following terms: Associated colloids
Give reasons for the following observations: Leather gets hardened after tanning.
What happens when a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution?
Answer the following question.
Why are medicines more effective in the colloidal state?
What causes brownian motion in colloidal dispersion?
Assertion: Colloidal solutions do not show brownian motion.
Reason: Brownian motion is responsible for stability of sols.
Which of the following is a correct statement?
The conditions given below are in the context of observing Tyndall effect in colloidal solutions:
- The diameter of the colloidal particles is comparable to the wavelength of light used.
- The diameter of the colloidal particles is much smaller than the wavelength of light used.
- The diameter of the colloidal particles is much larger than the wavelength of light used.
- The refractive indices of the dispersed phase and the dispersion medium are comparable.
- The dispersed phase has a very different refractive index from the dispersion medium.
Choose the most appropriate conditions from the options given below:
In order to cause coagulation of 100 ml Arsenious sulphide sol 111.7 mg of 2 M NaCl solution is used, the coagulation value of NaCl will be ______.
Lyophilic sols are more stable than lyophobic sols because ______.
