Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 7th Sem FPOPC Petro Pulp n Paper Tech IV Previous Question Paper
11068 : Pulp & Paper Technology - IV : 7 PT 03
Pipag?r?? nutllvltttliwuu ?'33?
Ttme . Three Hours . 0* 2' 6 ?5 . Max. Marks : 80
Notes : 1. Due credit will be given to neatness and adequate dimensions.
2. Assume suitable data wherever necessary.
3. Diagrams and chemical equations should be given wherever necessary.
4. Illustrate your answer necessary with the help of neat sketches.
5. Discuss the reaction. mechanism wherever necessary.
6. Use ofpen Blue/Black ink/re?l't only for writing the answer book.
SECTION - A
1. How and why stuff has to change to fumished? 14
OR
2. Expiain basic operations are to be carried out for production of paper in stock preparation. 14
3. Describe the role of hollander beater in paper manufacturing process? How strength 13
properties are incorporated in beater?
0R
4. How freeness tester control the beating time? Explain with graphical representation. 13
5. "Jm?den Re?ners plays important role in paper manufacturing process". Justify with . l3
respect to it's functioning.
OR
6. C ompare the advantages and disadvantages of conical re?ners and disk re?ners. 13
SECTION - B
7. Classify the sizing process. Explain their advantages & disadvantages. List out the 14
ehemic als used in sizing operations.
0R
8. Explain the role of surface tension, porosity and thickness of paper and board affects the 14
sizing properties.
9. List out various ?llers used in ?lling process. What are the essential properties must l3
possess by a good ?ller? How are they loaded in stock?
OR
10. Discuss the theories of retention of ?llers. 13
1]. De?ne wet end additives. Why starch is preferred as most popular additives? 13
OR
1.2. Explain the pre treatment 01? fresh water for pulp numufaeturing process. 13
*********
AW - 3391 l
This post was last modified on 10 February 2020