Download PTU TD-B.Sc 2020 March 2nd Sem 71490 Introduction To Chemical Processing Question Paper

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RollNo. | | L0111 ]

Total No. of Questions : 07

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B.Sc.(TD) (2014 & Onwards) (Sem.-2)

INTRODUCTION TO CHEMICAL PROCESSING

Subject Code : BScTD-207

M. Code : 71490

Total No. of Pages : 02

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Time : 3 Hrs. Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of FIFTEEN questions carrying TWO marks each.
2. SECTION-B contains SIX questions carrying TEN marks each and students have to attempt any THREE questions.

SECTION-A

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Q1. Write short notes on the following :

1. Oxidizing bleach
2. Mercerization
3. Scouring
4. Singeing

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5. Disperse dyeing
6. Screen printing
7. Basic dye
8. Union dyeing
9. Batik

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10. Flocking
11. Desizing
12. Color
13. State any two printing defects
14. Grading

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15. Degumming

SECTION-B

Q2. What do you understand by fabric impurities? Discuss the classification and characteristics of impurities in detail.

Q3. Write in detail about the various kinds of dyes available and their suitability according to fabric type.

Q4. Discuss in detail the preparatory process of cotton and blends.

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Q5. Explain the following special types of dyeing :

1. Cross dyeing
2. Union dyeing

Q6. Discuss in detail the equipment used in dyeing. What are dyeing defects? Elaborate.

Q7. What is printing? Write notes on the following methods of printing:

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1. Rotary screen printing
2. Roller printing

NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper of Answer Sheet will lead to UMC against the Student.

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