/50
0 votes, 0 avg

Chemistry Quizzes

Chemistry Quizzes

Chemistry Quiz – Applications-of-Adsorption-in-Industry and Madicine

Applications of Surface Chemistry and Heterogeneous Catalysis

Surface chemistry plays a vital role in various industrial and everyday applications, utilizing the principles of adsorption to enhance processes ranging from gas filtration to chemical reactions. Understanding these concepts is crucial for advancements in technology and medicine.

Gas Filtration and Separation

  • Gas Masks: Activated charcoal filters harmful gases, ensuring safe breathing in hazardous environments like coal mines.
  • Separation of Inert Gases: Charcoal separates noble gases based on their adsorption properties at different temperatures, demonstrating practical gas separation techniques.

Humidity Control and Color Removal

  • Control of Humidity: Silica and aluminum gels effectively adsorb moisture, helping maintain optimal humidity levels in various settings.
  • Removal of Coloring Matter: Animal charcoal clarifies solutions by adsorbing colored impurities, enhancing solution quality.

Catalysis and Chemical Reactions

  • Heterogeneous Catalysis: The adsorption process on solid catalysts accelerates important chemical reactions, such as the production of ammonia or sulfuric acid.
  • Curing Diseases: Certain drugs utilize adsorption to target pathogens, aiding in infection treatment.

Analytical Techniques

  • Froth Flotation Process: This method concentrates low-grade ores by separating valuable minerals from unwanted materials using a frothing agent.
  • Chromatographic Analysis: Employs adsorption principles for separating mixtures in analytical laboratories and industrial applications.

Key Takeaways

  1. Surface chemistry is integral to safety measures like gas masks and effective humidity control methods.
  2. Adsorption plays a significant role in both catalysis and medical applications, enhancing reaction rates and drug efficacy.
  3. Techniques such as froth flotation and chromatography showcase the diverse applications of adsorption in mining and analytical processes.

1 / 50

Category: Chemistry

Tags: A

Why does a catalyst remain unchanged in mass and chemical composition at the end of a reaction?

2 / 50

Category: Chemistry

Tags: A

What role does adsorption play in heterogeneous catalysis?

3 / 50

Category: Chemistry

Tags: A

Which process is exothermic in the context of adsorption theory of catalysis?

4 / 50

Category: Chemistry

Tags: A

Which of the following is an example of homogeneous catalysis?

5 / 50

Category: Chemistry

Tags: A

Which acid is used to furnish H+ ions for the hydrolysis of sugar?

6 / 50

Category: Chemistry

Tags: A

Why can a mixture of noble gases be separated by adsorption on charcoal?

7 / 50

Category: Chemistry

Tags: A

What role do H+ ions play in the hydrolysis of sugar?

8 / 50

Category: Chemistry

Tags: A

What is produced when vegetable oils undergo hydrogenation in the presence of finely divided nickel?

9 / 50

Category: Chemistry

Tags: A

How are noble gases separated using coconut charcoal?

10 / 50

Category: Chemistry

Tags: A

How does animal charcoal help in the removal of colouring matter from solutions?

11 / 50

Category: Chemistry

Tags: A

In Ostwald’s process, what is the catalyst used for the oxidation of ammonia?

12 / 50

Category: Chemistry

Tags: A

Who first made the systematic study of the effect of various foreign substances on the rates of chemical reactions?

13 / 50

Category: Chemistry

Tags: A

What happens to molecules adsorbed side by side on a catalyst’s surface?

14 / 50

Category: Chemistry

Tags: A

What is desorption in the context of catalysis?

15 / 50

Category: Chemistry

Tags: A

Why is chromatographic analysis important in analytical and industrial fields?

16 / 50

Category: Chemistry

Tags: A

What does the adsorption theory of heterogeneous catalysis explain about the catalyst?

17 / 50

Category: Chemistry

Tags: A

What state are the reactants in during the oxidation of ammonia in Ostwald’s process?

18 / 50

Category: Chemistry

Tags: A

What is the role of adsorption indicators in chemical analysis?

19 / 50

Category: Chemistry

Tags: A

In the context of catalysis, what does the term ‘phase’ refer to?

20 / 50

Category: Chemistry

Tags: A

What is desorption in the context of catalysis?

21 / 50

Category: Chemistry

Tags: A

What is the role of platinum in the oxidation of sulphur dioxide to sulphur trioxide?

22 / 50

Category: Chemistry

Tags: A

Which of the following is an example of heterogeneous catalysis?

23 / 50

Category: Chemistry

Tags: A

How does the froth flotation process help in the concentration of low-grade sulphide ores?

24 / 50

Category: Chemistry

Tags: A

Why are powdered substances more effective adsorbents than their crystalline forms?

25 / 50

Category: Chemistry

Tags: A

According to the adsorption theory of catalysis, what is the first step in the catalytic process?

26 / 50

Category: Chemistry

Tags: A

What does the adsorption theory of catalysis state about reactants?

27 / 50

Category: Chemistry

Tags: A

What is homogeneous catalysis?

28 / 50

Category: Chemistry

Tags: A

What is the primary function of a gas mask in coal mines?

29 / 50

Category: Chemistry

Tags: A

What is the role of finely divided iron in the Haber’s process?

30 / 50

Category: Chemistry

Tags: A

Why does physisorption decrease with the increase of temperature?

31 / 50

Category: Chemistry

Tags: A

What is one application of adsorption in curing diseases?

32 / 50

Category: Chemistry

Tags: A

In the Haber’s process for the manufacture of ammonia, which substance acts as a promoter for iron?

33 / 50

Category: Chemistry

Tags: A

What is the phenomenon called when substances enhance the activity of a catalyst?

34 / 50

Category: Chemistry

Tags: A

Why is the surface of a catalyst more reactive than its inner part?

35 / 50

Category: Chemistry

Tags: A

What combines with the old adsorption theory in modern adsorption theory?

36 / 50

Category: Chemistry

Tags: A

Which materials are commonly used to control humidity by adsorbing moisture?

37 / 50

Category: Chemistry

Tags: A

What is the first step in the mechanism of adsorption theory of catalysis?

38 / 50

Category: Chemistry

Tags: A

What is the primary factor that increases the rate of reaction in the adsorption theory of catalysis?

39 / 50

Category: Chemistry

Tags: A

What defines homogeneous catalysis?

40 / 50

Category: Chemistry

Tags: A

What happens to the decomposition temperature of potassium chlorate when manganese dioxide is added?

41 / 50

Category: Chemistry

Tags: A

What is the difference between homogeneous and heterogeneous catalysis?

42 / 50

Category: Chemistry

Tags: A

What remains unchanged when manganese dioxide is added to potassium chlorate during decomposition?

43 / 50

Category: Chemistry

Tags: A

What happens to molecules adsorbed side by side on a catalyst’s surface?

44 / 50

Category: Chemistry

Tags: A

What type of catalysis occurs when the reactants, products, and catalyst are in the same phase?

45 / 50

Category: Chemistry

Tags: A

What is the term used for substances that accelerate the rate of a chemical reaction and remain unchanged after the reaction?

46 / 50

Category: Chemistry

Tags: A

In the hydrolysis of methyl acetate catalysed by H+ ions, what are the products?

47 / 50

Category: Chemistry

Tags: A

What is one characteristic of chemisorption?

48 / 50

Category: Chemistry

Tags: A

Why is the surface of a catalyst more reactive than its inner part?

49 / 50

Category: Chemistry

Tags: A

What is the role of free valencies on the surface of a catalyst?

50 / 50

Category: Chemistry

Tags: A

According to modern adsorption theory, where is catalytic activity localized?

Your score is

The average score is 0%

Leave a Reply

Your email address will not be published. Required fields are marked *