Class 12th Chemistry Chapter Surface Chemistry Free MCQ Test Quiz

Prepare for your Class 12 Chemistry exams with our free test quiz on Surface Chemistry! Learn about Adsorption, Catalysis, Colloidal State, and Emulsions. Explore Physisorption and Chemisorption, factors affecting gas adsorption, enzyme catalysis, and properties of colloids. Dive into the fascinating world of surface chemistry now! #Class12Chemistry #FreeTestQuiz #SurfaceChemistry #Adsorption #Catalysis #Colloids #Emulsions

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12th Chemistry: Surface Chemistry

1 / 10

1. Which one of the following impurities present in colloidal solution cannot be removed by electrodialysis?

Sodium chloride

Potassium sulphate

Urea

Calcium chloride

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2 / 10

2. Adsorption due to strong chemical forces is called

Chemisorption

Physisorption

Reversible adsorption

Both (b) and (c)

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3 / 10

3. Which is not correct regarding the adsorption of a gas on surface of solid?

On increasing temperature, adsorption increases continuously

Enthalpy and entropy changes are –ve

Adsorption is more for some specific substance

This Phenomenon is reversible

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4 / 10

4. A catalyst :

lowers the activation energy

changes the rate constant

changes the product

itself destroyed in the reaction

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5 / 10

5. A biological catalyst is

an enzyme

a carbohydrate

an amino acid

a nitrogenous base

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6 / 10

6. The density of gold is 19 g/cm³. If 1.9 × 10^–4 g of gold is dispersed in one litre of water to give a sol having spherical gold particles of radius 10 nm, then the number of gold particles per mm³ of the sol will be

1.9 × 10¹²

6.3 × 10¹⁴

6.3 × 10¹⁰

2.4 × 10⁶

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7 / 10

7. Which of the following kind of catalysis can be explained by the adsorption theory?

Homogeneous catalysis

Acid - base catalysis

Heterogeneous catalysis

Enzyme catalysis

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8 / 10

8. In Freundlich adsorption isotherm, the value of 1/n is :

between 0 and 1 in all cases

between 2 and 4 in all cases

1 in case of physical adsorption

1 in case of chemisorption

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9 / 10

9. According to the adsorption theory of catalysis, the speed of the reaction increases because-

Adsorption lowers the activation energy of the reaction

The concentration of reactant molecules at the active centres of the catalyst becomes high due to strong adsorption

In the process of adsorption, the activation energy of the molecules becomes large

Adsorption produces heat which increases the speed of the reaction

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10 / 10

10. A catalyst

changes the equilibrium constant

lowers the activation energy

increases the forward and backward reactions at different speeds.

follows same mechanism for the reaction.

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Chapter wise chemistry mock test quiz

? Class 12 Chemistry Chapter 5 Free Test Quiz: Surface Chemistry, Adsorption, and Colloids! ?

? Are you studying Class 12 Chemistry and preparing for your exams? Test your knowledge with our free online quiz on Chapter 5 – Surface Chemistry! This chapter covers essential topics such as Adsorption, Catalysis, Colloidal State, and Emulsions.

? Dive into the world of surface chemistry and explore the fascinating concepts of Physisorption and Chemisorption. Learn about the factors that influence the adsorption of gases on solids and understand the different types of catalysis, including homogenous and heterogeneous catalysis. Discover the unique properties of enzymes and how they catalyze reactions with high selectivity.

? Explore the intriguing world of colloids and differentiate between true solutions, colloids, and suspensions. Uncover the distinction between lyophillic and lyophobic colloids, as well as multimolecular and macromolecular colloids. Witness captivating phenomena like the Tyndall effect, Brownian movement, electrophoresis, and coagulation.

? Lastly, delve into the realm of emulsions and explore various types of emulsions, understanding their significance in daily life and industrial applications.

? Whether you are aiming for top scores or simply want to expand your knowledge, our free test quiz is an excellent way to reinforce your understanding of Class 12 Chemistry Chapter 5 – Surface Chemistry. Take the quiz now and enhance your learning journey!

#Class12Chemistry #SurfaceChemistry #Adsorption #Catalysis #ColloidalState #Emulsions #FreeTestQuiz

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