English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Explain the Terms Tyndall Effect. - Chemistry

Advertisements
Advertisements

Question

Explain the terms Tyndall effect.

Solution

Tyndall effect: - When a beam of light is allowed to pass through a colloidal solution, it becomes visible like a column of light. This is known as the Tyndall effect. This phenomenon takes place as particles of colloidal dimensions scatter light in all directions.

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Surface Chemistry - Exercises [Page 146]

APPEARS IN

NCERT Chemistry [English] Class 12
Chapter 5 Surface Chemistry
Exercises | Q 23.4 | Page 146

RELATED QUESTIONS

Define the following terms: Associated colloids


Out of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.


Define the following term : Brownian movement


Answer the following question.
Why are medicines more effective in the colloidal state?


Which of the following will show Tyndall effect?


How does it become possible to cause artificial rain by spraying silver iodide on the clouds?


What causes brownian motion in colloidal dispersion?


Assertion: An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.

Reason: Pore size of the filter paper becomes more than the size of colloidal particle.


What is common in aqua sols and solid aerosols? How do they differ?


What is Gold number?


Gold number of protective colloids A, Band Dare 0.50, 0.01 and 0.10 and 0.005. The correct order of their protecting power is


Define coagulation.


Define the following term:

Coagulation


Why a negatively charged sol is obtained when AgNO3 solution is added to KI solution?


Which of the following is a correct statement?


The conditions given below are in the context of observing Tyndall effect in colloidal solutions:

  1. The diameter of the colloidal particles is comparable to the wavelength of light used.
  2. The diameter of the colloidal particles is much smaller than the wavelength of light used.
  3. The diameter of the colloidal particles is much larger than the wavelength of light used.
  4. The refractive indices of the dispersed phase and the dispersion medium are comparable.
  5. The dispersed phase has a very different refractive index from the dispersion medium.

Choose the most appropriate conditions from the options given below:


Coagulation value of the electrolytes AlCl3 and NaCl for As2S3 sol are 0.093 and 52 respectively. The No. of times AlCl3 has greater coagulating power than NaCl is ______.


Lyophilic sols are more stable than lyophobic sols because ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×
Our website is made possible by ad-free subscriptions or displaying online advertisements to our visitors.
If you don't like ads you can support us by buying an ad-free subscription or please consider supporting us by disabling your ad blocker. Thank you.