Glass Ceramics

1. It is defined as undercooled liquid having no definite melting point.a. Glass b. Glass Ceramics c. Ceramics d. Plastic

2. It is made by the high temperature pyrolysis of silicon tetrachloride.a.Akali Silicate b. Fused Silica c.Lead Glass d.Glass Fibers

3. They are produce from special glass compositions that are resistant to whether condition.

a.Akali Silicate b. Soda lime glass c.Lead Glass d.Glass Fibers

4. It is used for containers of all kinds, flat glass and automobile.

a.Akali Silicate b. Soda lime glass c.Lead Glass d.Glass Fibers

5. This kind of glass is very essential in optical work.

a.Akali Silicate b. Soda lime glass c.Lead Glass d.Glass Fibers

6. This is considered as waste glass.

a.cullet b. Borax c. Salt Cake d. Soda

7. _________ for glass manufacture should be almost pure quartz.

a.cullet b. Borax c. Salt Cake d. Soda

8. It is said to have removed the troublesome scum from tank furnace.

a.cullet b. Borax c. Salt Cake d. Soda

9. This is usually produced by dense soda ash.

a.cullet b. Borax c. Salt Cake d. Soda

10. It facilitates melting and utilizes waste material.

a.cullet b. Borax c. Salt Cake d. Soda

11-14What are the four phase of manufacturing procedures

Melting

Shaping and Forming

Annealing

Finishing

15. Float Glass is developed by

A. Pakington Brother B. Pilkington Brothers C. Filkington Brothers D. Flaot Brothers

16. What phase in manufacturing procedures reduces strain in the material?

A. Melting B. Shaping C. Forming D. Annealing

17. It is a furnace that has a capacity of melting 1350 tons of glass.

A. Tank furnace B. Pot Furnace C. Pack Furnace D. Both A and B

18-20. Give at least 3 example of most common type machine shape glass.

Window Glass

Plate Glass

Float Glass

Wired and Patterned Glass

Blown Glass

Light bulbs

Television Tubes

Glass tubingq

21. Also known as vitreous silica, made by using pure silica. However, it’s blebby and difficult to attain in transparent form

A. Colored & coated glass B. High Silica Glass C. Safety Glass D. Fused Silica Glass

22. For aesthetic purposes, and commonly composed of the oxide for of transitional metals.

A. Color and coated Glass B. Safety Glass C. Silica Glass D. Fiber Glass

23. These are the materials melted and formed into glass. These are usually bodies with crystalline and high melting particles.

A. Safety Glass B. Fiber Glass C. Glass Ceramics D. High Silica Glass

24. Owes its enhanced usefulness to its extreme fineness.

A. Safety Glass B. Fiber Glass C. Fotoform D. High Silica Glass

25. It is a photosensitive glass that is essentially a lithium glass in the surface and sodium glass in the interior.

A. Safety Glass B. Fiber Glass C. High Silica Glass D. Fotoform

26. It improves chemical resistance and increases viscosity in lower temperature range.

A. Barium Oxide B. Cerium C. Alumina D. Fluorine

27. It gives cloudy and opaque impression to glass.

A. Barium Oxide B. Fluorine C. Barium Oxide D. Cerium

28. This makes the glass absorb infrared rays

A. Cerium B. Alumina C. Barium Oxide D. Fluorine

29. This product, known as Vycor, constitutes an important advance toward the production of a glass approaching fused silica composition and properties.

A. Colored & coated glass B. High Silica Glass C. Safety Glass D. Fused Silica Glass

30. Added to glass to achieve brilliance dues to high refractive index.

A. Barium Oxide B. Cerium C. Alumina D. Fluorine