FirstRanker.com
Enrolment No.
BE - SEMESTER-VI(NEW) — EXAMINATION - SUMMER 2019
--- Content provided by FirstRanker.com ---
Subject Code:2163604 Date:18/05/2019Subject Name:Technology of Pigments
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
MARKS
Q.1 (a) Define the following: 03
- Pigment
- Extender
- Dyes
--- Content provided by FirstRanker.com ---
(b) Write down the following properties of pigment: 04
- Particle size
- Oil absorption value
--- Content provided by FirstRanker.com ---
(c) Discuss the detail classification of inorganic and organic pigments with suitable examples. 07
Q.2 (a) Explain the following terms: 03
- Vapour phase oxidation
- Calcination
(b) Discuss about coal tar distillation and role of distillation products. 04
--- Content provided by FirstRanker.com ---
(c) Explain the following process for synthesis of pigment: 07
- Crushing and grinding
- Vaporization
- Filtration
- Drying
--- Content provided by FirstRanker.com ---
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
--- Content provided by FirstRanker.com ---
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 TiO; Pigment. 07
Q.4 (a) How do you differentiate channel black and furnace black pigment? 03
--- Content provided by FirstRanker.com ---
(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: 04
--- Content provided by FirstRanker.com ---
- Reducing strength
- Bleeding Tendency
(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
--- Content provided by FirstRanker.com ---
(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
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---