Rr220804-organic-chemical-technology

Set No. 1

Code No: RR220804

II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ORGANIC CHEMICAL TECHNOLOGY (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Describe the properties of polyethylene. (b) How many polyethylene’s are there ? and name them. (c) What is the main difference of LLDPE and LDPE.

[8+4+4]

2. (a) Discuss the production of lithopone manufacture. (b) What are white pigments.

[8+8]

3. With the aid of a flow sheet explain in detail Butadiene- Styrene Copolymers and its production. [16] 4. (a) What are the uses of Olefin Fibers? Give its application. (b) Explain the manufacturing process of polyester fiber.

[6+10]

5. (a) Discuss the consumption pattern of starch by various industries. (b) Unit operations involved in starch production.

[8+8]

6. (a) Give the consumption pattern of ethanol in India (b) What are the chemical reactions involved in the manufacture of ethanol from molasses? (c) What are the uses of ethanol?

[5+6+5]

7. (a) Write down the chemical reactions involved in the krafts process? (b) Write down the chemical reactions for the sulphite process? 8. Write down the basic principles of solvent extraction of oils. ⋆⋆⋆⋆⋆

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[8+8] [16]

Set No. 2

Code No: RR220804

II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ORGANIC CHEMICAL TECHNOLOGY (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Mention the major engineering problems in the manufacture of phenol from chlorobenzene. (b) With a neat flowchart explain the manufacture of phenol by using chlorobenzene. [8+8] 2. (a) What are the requirements of paints. (b) Define the following terms. i. ii. iii. iv.

Vehicle Hiding power Weathering resistance Spreading power

[4×4]

3. (a) Write about Softeners and extenders. (b) Describe the unit operations used in rubber manufacture.

[10+6]

4. (a) What are the uses of Olefin Fibers? Give its application. (b) Explain the manufacturing process of polyester fiber.

[6+10]

5. (a) Explain briefly the uses of starch products. (b) Describe the production of corn products with a neat diagram.

[6+10]

6. (a) What are the required characteristics that micro-organisms used in industrial fermentation must possess? (b) Explain the chemical structure of starch. (c) Economics of sugar industry in India.

[6+5+5]

7. (a) Discuss about finishing operations for pulp? (b) How is the sulphate process modified for bagesse utilization? 8. Write down the basic principles of solvent extraction of oils. ⋆⋆⋆⋆⋆

1 of 1

[8+8] [16]

Set No. 3

Code No: RR220804

II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ORGANIC CHEMICAL TECHNOLOGY (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. Describe how phenol-formaldehyde resin is produced.

[16]

2. Explain the manufacturing procedure of good paint.

[16]

3. With the aid of a flow sheet explain in detail Butadiene- Styrene Copolymers and its production. [16] 4. (a) Write short notes on i. PAN-fibers ii. Reinforcing carbon fibers. (b) Describe in detail about Polysters.

[8+8]

5. (a) Discuss the consumption pattern of starch by various industries. (b) Unit operations involved in starch production.

[8+8]

6. What are the various major engineering problems associated with fermentation process? Explain in detail. [16] 7. What are specialty papers? Explain with an example.

[16]

8. What are the builders of detergents, explain with examples.

[16]

⋆⋆⋆⋆⋆

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Set No. 4

Code No: RR220804

II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2008 ORGANIC CHEMICAL TECHNOLOGY (Chemical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. What are the types of phenol-formaldehyde resins? How are they produced? [16] 2. (a) What is the function of a resin in varnish. (b) Give examples of some resins and rosins.

[8+8]

3. (a) Why do you add filling materials to rubber? Give its importance (b) Write a note on i. Processibility ii. Sponge structure. (c) What is molding in rubber fabrication?

[5+6+5]

4. (a) Differentiate nylon 6,6 and 6? (b) Explain the manufacturing process of nylon 6,6.

[6+10]

5. Write short notes on (a) Amylose (b) White potato starch (c) Rice starch (d) Tapioca starch

[4×4]

6. (a) What are the required characteristics that micro-organisms used in industrial fermentation must possess? (b) Explain the chemical structure of starch. (c) Economics of sugar industry in India. 7. What are specialty papers? Explain with an example.

[6+5+5] [16]

8. Draw Flow Diagram and explain the manufacturing process of Alkane sulphonate. [16] ⋆⋆⋆⋆⋆

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