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Formation of Clay from Feldspar in Igneous Rocks

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Formation of Clay from Feldspar in Igneous Rocks

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Questions and Answers

What is the composition of soda-lime glass based on the text?

13-17% CaO, 5-10% NaO, 70-75% B2O3

13-17% NaO, 5-10% CaO, 70-75% SiO2 (correct)

13-17% CaO, 5-10% SiO2, 70-75% NaO

13-17% SiO2, 5-10% NaO, 70-75% CaO

Which type of glass is known for its high resistance to thermal shock?

Fused quartz

Silica glass

Borosilicate glass (correct)

Soda-lime glass

What is the main difference between borosilicate glass and soda-lime glass?

Transparency

Composition

Expansion coefficient

Melting point (correct)

Which industrial application is NOT mentioned for silica glass?

Electrical insulators Signup and view all the answers

What is the identifying substance in clay that results from the alteration of feldspar?

Kaolinite Signup and view all the answers

In the context of technical ceramics, what is the equivalent of mild steel in metals?

Alumina Signup and view all the answers

What is the maximum operating temperature influenced by in alumina-based technical ceramics?

Increasing alumina content Signup and view all the answers

What is the single crystal form of alumina that is used for watch faces and cockpit windows of high-speed aircraft?

Sapphire Signup and view all the answers

What characteristic makes glass ceramic unique compared to other glasses?

High heat-resistance Signup and view all the answers

What is a typical use of glass ceramics mentioned in the text?

Creating cookware Signup and view all the answers

Why is it stated that glass is 'difficult to work' in the text?

It is hard to shape using ordinary methods Signup and view all the answers

What is the process that glass ceramics undergo to achieve their unique characteristics?

Nucleating small crystals through controlled cooling Signup and view all the answers

What is the purpose of adding Chromium oxide to alumina?

To improve abrasion resistance Signup and view all the answers

Which material is nearly as hard as diamond but vastly less expensive?

Born carbide (B4C) Signup and view all the answers

What is the typical use of Tungsten Carbide (WC)?

Bulletproof surface Signup and view all the answers

What property of alumina is improved by adding sodium silicate?

Processability Signup and view all the answers