IGNOU MCH 19 SOLVED ASSIGNMENT

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MCH 019 (July 2025) - ENGLISH

Tutor Marked Assignment

Green Chemistry

Course Code: MCH-019

Assignment Code: MCH-019/TMA/2025

Maximum Marks: 100

Note: Attempt all the questions. The marks for each question are indicated against it.

1. List the twelve principles of green chemistry.

 

2. Explain the principle of using safer solvents and auxiliaries.

 

3. Explain the terms-'reaction yield' and 'atom economy'. How are these two different?

 

4. What aspects should be kept in mind while selecting a proper feedstock for synthesis from green chemistry point of view?

 

5. What are VOCs? Give examples. Explain various sources of VOCs.

 

6. Explain various type of chemical reactions giving a suitable example for each.

 

7. When we search the literature available for a particular compound, what questions we should explore about it to know that it is a safe chemical.

 

8. Discuss various aspects of toxicity of a chemical to the humans to be considered while making a wiser choice from the available options.

 

9. Illustrate how chemicals can harm and changes the local environment.

 

10. Discuss the harmful effects of global climate change.

 

11. Explain the Boots synthesis of ibuprofen giving the chemical reactions involved.

 

12. Discuss the reactions involved in the greener synthesis of ibuprofen. Why is it greener as compared to Boots synthesis?

 

13. Explain the importance of adipic acid. Write the scheme of its synthesis starting from benzene.

14. Discuss the harmful effects of the chemicals used in the above synthesis (Q.13) of adipic acid.

15. What are antifoulants? Discuss the harmful effects of TBTO.

16. Explain the harmful effects of blowing agents used in the manufacturing of EPS.

17. What are the implications of using chlorine for obtaining white paper? Explain.

18. Discuss the role of TAML activators in the bleaching of paper.

19. Explain the synthesis of PET starting from p-xylene. Write the reactions involved.

20. Discuss the application of green chemistry in the synthesis of drugs simvastatin, naproxen and aspirin. List some greener methods of synthesis being used these days in chemical laboratories.

 

MCH 19 2026 - English

Tutor Marked Assignment

MCH-019: GREEN CHEMISTRY

Course Code: MCH-019

AssignmentCode: MCH-019/TMA/2026

Maximum Marks: 100

Note: Attempt all the questions. The marks for each question are indicated against it.

1. Explain the need and origin of green chemistry.

2. Explain the principle of use of renewable feed stocks.

3. Giving a suitable example show that for substitution reaction, the atom economy is less than 100%.

4. What are the characteristics of reagents used in the chemical reactions? Which point should be kept in mind while choosing a reagent from the green chemistry point of view?

5. How can catalysis and process analytical chemistry be used as a tool in green chemistry?

6. How would you proceed for preparing a chemical compound? Discuss the aspects related to planning, requirements and safety for such a synthesis.

7. What are oxidation and reduction reactions? Give one example of each type of theses reactions.

8. How would you modify a molecule if it contains a toxic group in its structure?

9. (i) Which aspects related to the toxicity of a chemical should be kept in mind while making a wiser choice?

(ii) Give any two examples of the greenhouse gases.

10. Explain the formation of photochemical smog using a suitable diagram.

11. Write the steps involved in the Boots synthesis of ibuprofen.

12. Discuss the use of polymers containing fluorine atoms in the tail part for dissolving industrial material.

13. How is catechol produced starting from benzene? Give the sequence of reactions involved.

14. How BHT is produced? Write the scheme of synthesis with reactions.

15. What is DCOI? Write its structure and use. List the advantages of DCOI as compared to ТВТО.

16. Give a brief account of insecticides developed by Rohm and Haas.

17. What is EPS? Give its uses.

18. How is white paper produced? Explain.

19. (i) What is PET? Write its uses.

(ii) Briefly explain PETRETEC process.

20. Write the steps involved in the synthesis of pregabalin.

 

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Course Name	M.Sc. in Chemistry
Course Code	MSCCHEM
Programm	Courses
Language	English

 

 

 

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