हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Explain the term Tyndall effect.

Advertisements
Advertisements

प्रश्न

Explain the term Tyndall effect.

स्पष्ट कीजिए
Advertisements

उत्तर

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
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

संबंधित प्रश्न

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


Give reasons for the following observations: Leather gets hardened after tanning.


What modification can you suggest in the Hardy-Schulze law?


Explain what is observed when an electric current is passed through a colloidal sol?


What happens when a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution?


Which of the following will show Tyndall effect?


Which phenomenon occurs when an electric field is applied to a colloidal solution and electrophoresis is prevented?

(i) Reverse osmosis takes place.

(ii) Electroosmosis takes place.

(iii) Dispersion medium begins to move.

(iv) Dispersion medium becomes stationary.


Why do we add alum to purify water?


Why does leather get hardened after tanning?


Assertion: Colloidal solutions do not show brownian motion.

Reason: Brownian motion is responsible for stability of sols.


Give reason for the following:

Lyophilic colloidal solutions are more stable than lyophobic colloidal solutions.


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


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?


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 ______.


6.84 g Al2(SO4)3 is needed to coagulate 2.5 L of As2S3 sol completely in 2.0 hrs. The coagulation value of Al2 (SO4)3 is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×