Test: Properties Of Colloids


20 Questions MCQ Test Chemistry Class 12 | Test: Properties Of Colloids


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This mock test of Test: Properties Of Colloids for Class 12 helps you for every Class 12 entrance exam. This contains 20 Multiple Choice Questions for Class 12 Test: Properties Of Colloids (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Properties Of Colloids quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Properties Of Colloids exercise for a better result in the exam. You can find other Test: Properties Of Colloids extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

When colloids are subjected to an electrical field particles move towards an electrode and precipitate. Name the process.

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QUESTION: 2

Which property is represented by the following figure;

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QUESTION: 3

Which law is represented by the following expression?

For a positive colloid the order of precipitation is : Phosphate ion>sulphate ion >chloride ion.

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QUESTION: 4

Which substance is added to water containing suspended impurities to coagulate the suspended impurities and make water fit for drinking purposes.

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QUESTION: 5

The simplest way to check whether a system is a colloid is by using:

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The Tyndall Effect is the effect of light scattering in colloidal dispersion, while showing no light in a true solution. This effect is used to determine whether a mixture is a true solution or a colloid.

QUESTION: 6

Which method cannot be used for the coagulation of the lyophobic sol?

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Coagulation is the destabilization of Colloids by neutralizing the electric charge of the dispersed phase particles, which results in aggregation of the colloidal particles.

 

QUESTION: 7

Lyophilic colloids that shows the property of protecting lyophobic colloids are also called as:

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QUESTION: 8

Which of the following forms a colloidal solution in water?

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QUESTION: 9

The factors which are responsible for the stability of lyophilic sols are:

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QUESTION: 10

The Brownian motion is due to:

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QUESTION: 11

Which property of colloids is applied in rubber plating & sewage disposal?

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QUESTION: 12

In Tyndall effect the colloidally suspended particles:

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QUESTION: 13

Ferric hydroxide is a negative sol, which of the following electrolyte will coagulate it most:​

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QUESTION: 14

What is aggregation of colloidal particles into insoluble precipitate by addition of some suitable electrolyte called?

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Aggregation of colloidal particles into insoluble precipitate by addition of some suitable electrolyte is called coagulation.

QUESTION: 15

A fresh precipitate can be transformed into colloidal sol by:

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QUESTION: 16

Which statement describes coagulation value?

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QUESTION: 17

Which electrolyte will precipitate a negatively charged colloids (As2S3 sol) to a greater extend?​

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QUESTION: 18

The process in which colloid is placed inside a bag of semi permeable membrane like cellophane or parchment paper which permits ions and not colloids to pass through, is called as:

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QUESTION: 19

Which of the following will have the highest coagulating power for As2S3 colloids?

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The correct answer is Option A.

AS2S3 is an anionic sol (negative sol) hence coagulation will depend on coagulating power of cation , which is directly proportional to the valency of the cation (Hardy-Schulze rule). 
Hence positive ions having maximum amount of charge will have more coagulation thus, Al3+ have maximum coagulating power.

QUESTION: 20

What is scattering of light by mist on head light of vehicles called?

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