Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2173615 New Functional Dyes And Recent Trends In Dyes Technology Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2173615 Date: 26/11/2019
Subject Name: New Functional dyes & Recent Trends in Dyes 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.
MARKS
Q.1 (a) Give the synthesis of Solvent Yellow 14. 03
(b) Discuss about functional dyes with respect to electromagnetic
radiation.
04
(c) What are metal complex dyes? Write down the role of metal. Give
the properties and applications of metal complex dyes.
07
Q.2 (a) Discuss the application of functional dyes in Photocopying. 03
(b) Write a note on Dyes in Solar cells. 04
(c) Discuss application of functional dyes in Ink-jet printing. 07
OR
(c)
Discuss in details dyes in Fluorescent Sensors and Probes.
07
Q.3 (a)
Write a note on natural hair dyes.
03
(b)
How do you synthesize Orange B and Food Red 9?
04
(c) Give the structure of human hair and briefly explain traditional
method of application of hair dyes.
07
OR
Q.3 (a)
Discuss about dye-removal preparations.
03
(b) Give the two different methods for synthesis of food yellow 4. 04
(c)
Discuss the harmful effects of synthetic hair colours.
07
Q.4 (a) Discuss the concept of Right First Time (RFT) dyeing technology. 03
(b) Elaborate the term Plasma. Give the difference between
conventional dyeing and plasma dyeing technology.
04
(c)
Explain the Dye sensitized solar cell (DSSC) with its working principle
and operation in detail.
07
OR
Q.4 (a) Explain the following terms:
(i) % Rate of Exhaustion (ii) Strike Time
03
(b) Discuss the technology involved is based on solvents used in typical
dyes synthesis reactions.
04
(c) Explain the electrochemical dyeing by considering its advantages,
dyeing methods in detail.
07
Q.5 (a) Give the importance of Plasma Technology. 03
(b) Explain the following terms:
(i) % Fixation (ii) Equilibrium time
04
(c) Discuss the following qualitative control test:
(i) Dye Hue Test (ii) Dye Strength Test (iii) Fixation Efficiency
07
OR
Q.5 (a) Write down the difference between conventional dyeing and
supercritical dyeing technology.
03
(b) Discuss the following quality control test with respect to future dye
house : (i) Wash Fastness Test (ii) Rubbing Fastness Test
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2173615 Date: 26/11/2019
Subject Name: New Functional dyes & Recent Trends in Dyes 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.
MARKS
Q.1 (a) Give the synthesis of Solvent Yellow 14. 03
(b) Discuss about functional dyes with respect to electromagnetic
radiation.
04
(c) What are metal complex dyes? Write down the role of metal. Give
the properties and applications of metal complex dyes.
07
Q.2 (a) Discuss the application of functional dyes in Photocopying. 03
(b) Write a note on Dyes in Solar cells. 04
(c) Discuss application of functional dyes in Ink-jet printing. 07
OR
(c)
Discuss in details dyes in Fluorescent Sensors and Probes.
07
Q.3 (a)
Write a note on natural hair dyes.
03
(b)
How do you synthesize Orange B and Food Red 9?
04
(c) Give the structure of human hair and briefly explain traditional
method of application of hair dyes.
07
OR
Q.3 (a)
Discuss about dye-removal preparations.
03
(b) Give the two different methods for synthesis of food yellow 4. 04
(c)
Discuss the harmful effects of synthetic hair colours.
07
Q.4 (a) Discuss the concept of Right First Time (RFT) dyeing technology. 03
(b) Elaborate the term Plasma. Give the difference between
conventional dyeing and plasma dyeing technology.
04
(c)
Explain the Dye sensitized solar cell (DSSC) with its working principle
and operation in detail.
07
OR
Q.4 (a) Explain the following terms:
(i) % Rate of Exhaustion (ii) Strike Time
03
(b) Discuss the technology involved is based on solvents used in typical
dyes synthesis reactions.
04
(c) Explain the electrochemical dyeing by considering its advantages,
dyeing methods in detail.
07
Q.5 (a) Give the importance of Plasma Technology. 03
(b) Explain the following terms:
(i) % Fixation (ii) Equilibrium time
04
(c) Discuss the following qualitative control test:
(i) Dye Hue Test (ii) Dye Strength Test (iii) Fixation Efficiency
07
OR
Q.5 (a) Write down the difference between conventional dyeing and
supercritical dyeing technology.
03
(b) Discuss the following quality control test with respect to future dye
house : (i) Wash Fastness Test (ii) Rubbing Fastness Test
04
2
(c) Explain the plasma with respect to generation of plasma and
cascade process of ionization with suitable diagrammatical
representation.
07
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This post was last modified on 20 February 2020