Download GTU BE/B.Tech 2019 Summer 6th Sem New 2163604 Technology Of Pigments Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2163604 Technology Of Pigments Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2163604 Date:18/05/2019
Subject Name:Technology of Pigments
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) Define the following:
(i) Pigment (ii) Extender (iii) Dyes
03
(b) Write down the following properties of pigment:
(i) Particle size (ii) Oil absorption value

04
(c) Discuss the detail classification of inorganic and organic pigments with
suitable examples.
07

Q.2 (a) Explain the following terms:
(i) Vapour phase oxidation (ii) Calcination
03
(b) Discuss about coal tar distillation and role of distillation products. 04
(c) Explain the following process for synthesis of pigment:
(i) Crushing and grinding (ii) Vaporization
(iii) Filtration (iv) Drying
07
OR
(c) Discuss co-precipitation with suitable example. Explain factors
controlling it.
07
Q.3 (a) Write down the properties and applications of TiO2 Pigment. 03
(b) Discuss the properties and applications of China clay and Magnesium
silicate.
04
(c) Explain the manufacturing process of Calcium Carbonate extender
pigment.
07
OR
Q.3 (a) Write a note on: Hydrated aluminum oxide. 03
(b) Discuss about surface treatment, crystal structure and hiding power of
TiO2 Pigment.
04
(c) Explain the chloride process for the manufacturing of TiO2 Pigment. 07
Q.4 (a) How do you differentiate channel black and furnace black pigment? 03
(b) Discuss the properties and applications of Zinc oxide pigment. 04
(c) Explain the manufacturing process of Zinc sulphide pigment in detail. 07
OR
Q.4 (a) Write a note on: Lamp black pigment. 03
(b) Explain the following terms:
(i) Reducing strength (ii) Bleeding Tendency
04
(c) Explain the process for synthesis of acetylene black pigment. 07
Q.5 (a) Write down the properties and applications of Chrome green pigment. 03
(b) Discuss about Ultramarine blue pigment. 04
(c) Explain the manufacturing process of copper Phthalocyanine pigment. 07
OR
Q.5 (a) How do you measure the colour by using chromaticity diagram? 03
(b) Write down the properties and applications of Phthalocyanine green
pigment.
04
(c) Explain the manufacturing process of Prussian blue pigment. 07
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