Download GTU BE/B.Tech 2019 Winter 3rd Sem New 3133603 Introduction To Glass And Ceramics I Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Name: Introduction to Glass & Ceramics-I

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

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Q.1

1. Describe the polymorphic transformation of silica with flow diagram [03]
2. Explain the formation of silica network structure [04]
3. Describe the ring structure in silica materials and show how cordierite material is derived from Beryl structure. [07]

OR

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1. Discuss short notes on silica gel. [03]
2. Discuss the difference between displacive and reconstructive transformation. [04]
3. Explain the mechanism of transformation toughening in zirconia. [07]

Q.3

1. Explain the occurrences of alumina. [03]

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2. Why K+ ion in muscovite is not exchangeable. [04]
3. Describe in detail feldspar structure. [07]

OR

1. Why K+ ion in muscovite is not exchangeable. [03]
2. Differ between muscovite and lepidolite [04]

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3. Describe the development of Kaolinite structure from talc [07]

Q.4

1. Write short note on flint materials. [03]
2. Describe the DTA analysis of talc with reference to the reactions occurring at endothermic and exothermic peaks. [04]
3. Describe the NaCl structure with reference to its radius ratio and unit cell. [07]

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OR

1. What is dead burnt magnesia? [03]
2. Define natural and sea water magnesia. [04]
3. Explain the synthesis of Sea water magnesia [07]

Q.5

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1. Define a flux material. [03]
2. Define what is flux factor in silica refractories and how it is measured. [04]
3. Explain the fundamental structure of chlorite group of materials. [07]

OR

1. Define normal & inverse spinel. [03]

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2. Describe chrome ore structure. [04]
3. Explain how sea water magnesia is synthesized. [07]

1. Discuss the polymorphic transformation of zirconia. [04]
2. Explain the difference between Fully stabilized and partially stabilized zirconia. [07]

Date: 5/12/2019

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