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Name of the University : Mahatma Gandhi University
Degree : B.Sc. Sixth Semester
Name Of The Subject : Chemistry
Document type : Model Question Paper

Website : mgu.ac.in
Download Model Question Papers :  https://www.pdfquestion.in/uploads/7527-Petrochemicals.docx

MGU Chemistry Sample Question Paper

Section A : (Answer all questions. Each question carries 1 mark)

Petrochemicals

1.Define octane number.
2.Role of TEL in petrochemical industry is ……….

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3.What is doctor solution?
4.What is sour spirit?
5.How is carbon black prepared from methane?
6.What is Naphtha?
7.Name the hydrocarbon in natural gas.
8.Give the composition of LPG
9.What are petrochemicals?
10.Give the chemical name of Gutta-Purcha.

Section B : (Answer any 8 questions. Each carries 2 marks)
11.How acetylene can be prepared?
12.Write the method of manufacture of butanediols?
13.Give the condition required for the hydration of ethane to ethanol
14.How will you convert ethylene to acrylonitrile?
15.Write the uses of cumene.
16.Briefly explain the chemistry of detergent action.
17.How will you prepare neoprene rubber?
18.How is anti-knocking property of a fuel improved?
19.Write the reactions involved in the conversion of methane to methanol.
20.Define octane number.
21.What do you mean by refining of petroleum?
22.How is CS2 prepared from methane?

Section C :
23. Discuss the method of distillation of crude oil.
24. Explain the mechanism and application of reforming
25. Discuss the characteristics of hydrocarbon fuels.
26. What are viscosity reducers? Give examples?
27. What is the effect of sulphur compounds in petroleum products?
28. Discuss the various catalysts used in petrochemical industry and their selectivity.
29. Write briefly the importance of petroleum industry in context of Indian economy
30. Suggest suitable methods for the conversion of
a) Ethylene to ethane 1, 2 diol
b) Ethylene to propylene
31. How is PVC prepared from ethylene?

Section D : (Answer any 2 questions. Each carries 15 marks)
32. a)Discuss the free radical mechanism of cracking taking the example of n-hexane.
b) Write the reaction path for obtaining i) vinyl chloride from acetylene ii) Glycerin from propylene (2x5marks)
33.a) Give the preparation and industrial application of i) Naphthalene ii) Buna Rubber
b) Starting from methane how are the following synthesised i) Chloroform ii) Formic acid iii) Hydrogen cyanide
34. a) Write briefly on types of cracking, mechanism and chemical changes occurring during cracking.
b) Write briefly on the manufacture of oligomer from C-4hydrocarbon.
c) Explain hydroformylation of alkenes
35. a) Explain the mechanism and application of oxidation, hydration and ammoxidation
b) Discuss the manufacture of the following
i) Carbon black from methane ii) Toluene ( 6 marks)

Chemistry in Everyday life

Model Question Paper :
Time: Three hours
Total weightage: 25
Section A :
Answer all questions. Each bunch of four questions carries a weightage of 1
I. Fill up the blanks :
1. FPO means———–
2. Soft soap generally contains———–
3. Environmental problems arising from the use of plastics is due to their________
4. In anionic detergent the hydrophilic part is———– charged.

II
5. Write any one of the preservatives used in cosmetics.
6. Give the name of an analgesic.
7. Name an artificial sugar.
8. Give an example of a chromophoric group

III
9. Name a compound used as anti-oxidant for packed foods.
10. Give any one of the bulking agents used in cosmetics.
11. Give an example of a plant growth hormone
12. Mention the role of Parabens in cosmetics.

IV
13. Name a drug used or antifertility.
14. A soap to have the best cleansing action, it should contain —– carbon atoms.
15. Mention the ISO paper size for standard printing and stationary.
16. ———— is used as a preservative in dried fruits and nuts.

Section B :
Answer any 5 questions. Each carries a weightage of 1
17. Name any four food safety acts in India.
18. Name two natural fibres. Mention their use.
19. What is paracetamol chemically? What is its use?
20. Differentiate between hard and soft detergents
21. What is the function of abrasive in tooth paste?
22. What are food preservatives? Give two examples.
23. What are the requisites of a dye?
24. Give an idea on Bio fertilizers.

Section C :
Answer any 4 questions. Each carries a weightage of 2
25. Write a note on biodegradable polymers.
26. Discuss the cleansing action of soap.
27. Discuss the role of leavening agents and taste enhancers in food industry?
28. Give the formulation of toilet powder?
29. Give a brief note on Plant growth hormones
30. Discuss the various types of detergents.

Section D :
Answer any two questions. Each carries a weightage of 4
31. a. Discuss briefly on pesticides and herbicides. Explain its environmental impacts.
b. What are the different classifications of hair dyes?
32. Explain the following with suitable examples.
a) Preservatives b) Food Colours c) Soap additives d) Biofertilizers
33. Give a brief account of the following
a). Organic materials b). antihistamines and antacids