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

Assertion: Colloidal solutions show colligative properties. Reason: Colloidal particles are large in size.

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प्रश्न

Assertion: Colloidal solutions show colligative properties.

Reason: Colloidal particles are large in size.

पर्याय

  • Assertion and reason both are correct and the reason is correct explanation of assertion.

  • Assertion and reason both are correct but reason does not explain assertion.

  • Assertion is correct but reason is incorrect.

  • Both assertion and reason are incorrect.

  • Assertion is incorrect but reason is correct.

MCQ
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उत्तर

Assertion and reason both are correct but reason does not explain assertion.

Explanation:

Colloidal particles are large in size and hence the number of particle is lesser than the true solution. The lesser number of particles causes lower colligative properties.

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पाठ 5: Surface Chemistry - Exercises [पृष्ठ ७३]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 5 Surface Chemistry
Exercises | Q 74 | पृष्ठ ७३

संबंधित प्रश्‍न

Define the following term:

Zeta potential


Give reasons for the following observations:

Brownian movement provides stability to the colloidal solution.


Out of MgCl2 and AlCl3, which one is more effective in causing coagulation of negatively charged sol and why?


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


What happens when persistent dialysis of a colloidal solution is carried out?


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


A colloidal sol is prepared by the given method in the figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube? How is the solution represented? 


What happens when a lyophilic sol is added to a lyophobic sol?

(i) Lyophobic sol is protected.

(ii) Lyophilic sol is protected.

(iii) Film of lyophilic sol is formed over lyophobic sol.

(iv) Film of lyophobic sol is formed over lyophilic sol.


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.


What causes brownian motion in colloidal dispersion?


Give reason for the following:

Lyophilic colloidal solutions are more stable than lyophobic colloidal solutions.


Which of the following is used for removing change on colloidal solution?


Gold number is associated with:-


The important factor in the stabilization of a colloidal solution is ______


What is electrophoresis?


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


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 ______.


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