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Seat No.: Enrolment No.:
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER • EXAMINATION SUMMER 2018
Subject Code: 360505 Date: 05-05-2018
Subject Name: PULP AND PAPER TECHNOLOGY
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Define paper and pulp and write raw material for paper production.
07



07

Compare sulfate and sulphite pulps.




Q.2

Explain sulfate kraft pulping process with flow diagram.
07



07

Discuss Major Engineering problems of pulp industry.




OR

Write raw material for pulp production.
07


Q.3

Write the types of paper products and their application.
07



07

Write a note on R.A.G pulping.




OR
Q.3

Short note on major engineering problems of paper industries.
07



07

Explain wet process for manufacturing of paper with neat figure.




Q.4

Short note on various Lignin chemicals and their applications.
07



07

Discuss Major engineering problems of lignin chemicals.




OR
Q.4

Explain manufacturing of Dimethyl sulfide.
07



07

Describe preparation of chemical cellulose.




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Q.5

Short note on Bio-technical approach for pollution abatement.
07



07

Explain manufacturing of Dimethyl sulfoxide with flow diagram.




OR
Q.5

Discuss enzymology for lignin waste treatment.
07



07

Explain black liquor recovery process with neat figure.