Cement and Glass MCQs

1. Which of the following can be ensured by Proper proportioning of concrete?

Resistance to water
Water tightness of the structure
Desired durability
All of above

All of above

2. Which is/are existing as minor components of cement?

NaO
MgO
KO
All of above

All of above

3. What is the proportion of lime, alumina, or silica for good cement?

1.9 to 4.5
2.5 to 3.5
1.9 to 3.5
1.9 to 2.5

1.9 to 2.5

4. Which of the following are the chemical compounds that are added to reduce the reactivity of glass?

Stabilizers
Modifiers
Additives
None of these

Stabilizers

5. Which of the following statements is/are correct with regard to hydraulic cement?

It is insoluble in water after setting
It has the ability to set and develop strength in the air
It is stable in air and water
All of these

All of these

6. The main component of glass is:

Silica
Silicon
Caustic
Alumina

Silica

7. What is Clinker?

Roasted calcareous material
Roasted argillaceous material
Roasted calcareous and argillaceous material
Roasted gypsum

Roasted calcareous and argillaceous material

8. Cement is a mixture of ______.

Clay and clinker
Limestone and gypsum
Clay, limestone, and gypsum
Limestone and clay

Clay, limestone, and gypsum

9. What is the percentage of the composition of the mixture of clay and limestone in the raw material for cement?

15% limestone and 55% clay
50% limestone and 50% clay
75% limestone and 25% clay
30% limestone and 15% clay

75% limestone and 25% clay

10. Rotary spinning process is used to produce ____.

Glass marble
Optical fiber
Glass wool
All of above

Glass wool

11. What is the average amount of lime in the cement?

81.5%
26.2%
61.5%
41.5 %

61.5%

12. What is the average amount of silica in the cement?

42.5 %
63.5%
22.5%
22.5%

22.5%

13. Gets higher strength

14. Which is the correct chemical equation representing the production of glass?

Na2CO3+ SiO2 → 2Na2SiO3 + CO2
Na2CO3+ SiO2 → Na2SiO3+2C02
Na2CO3+2SiOg → NagSiO3 + CO2
Na2CO3 + SiO2 → Na2SiO3 + CO2

Na2CO3 + SiO2 → Na2SiO3 + CO2

15. The glass industry needs soda ash with ____

Solids density 1.80 and bulk density 0.58
Solids density 2.36 and bulk density 0.6
Solids density 1.91 and bulk density 1.0
None of these

Solids density 1.91 and bulk density 1.0

16. Most commercial glasses consist of ________.

Silica
Soda
Lime
All above

Lime

17. Which is/are the major ingredients of glass?

Silica
Lime
Soda ash
All of above

All of above

18. The pieces of waste glass are known as cullet. Which statement is with concern to cullet?

It is used to facilitate melting
It is broken pieces of glass
It helps to utilize the wastes
All of these

All of these

19. Which type of glass is transparent to UV light?

Lead glass
Window glass
Quartz glass/fused quartz
Flint glass

Quartz glass/fused quartz

20. Which of the following glass contains boron trioxide?

Quartz glass/fused quartz
Pyrex glass/sodium borosilicate glass
Window glass
Flint glass

Pyrex glass/sodium borosilicate glass

21. Which glass is used to make artificial gems, lenses, prisms, etc.?

Quartz glass/fused quartz
Flint glass
Pyrex glass/sodium borosilicate glass
Window glass

Flint glass

22. Which of the following is the mixture of potassium and sodium silicate?

Water glass
Quartz glass/fused quartz
Pyrex glass/sodium borosilicate glass
Flint glass

Water glass

23. Glaze surface is ______surface.

(A) Crack surface

(B) Porous Surface

(C) Smooth surface

(D) None of above

Smooth surface

24. Lead glass comprises main constituents of which of the following?

Al2O3 and B203
MgO2PbO and CaO
PbO and SiO2
PbO and Al2O3

PbO and Al2O3

25. Windows glass contains silica % of _______.

87%
50%
39%
72%

87%

26. Which of the following is used for Annealing?

Converter
Batch
Klin

Klin

27. The main constituents of _______ are born, oxide, and silica.

Fibrous glass
Soda-lime glass
Low silica glass
Pyrex glass

Pyrex glass

28. The word ‘ceramic’ is meant for ____?

Burnt material
Hard material
Soft material
Dry material

Burnt material

29. Which is not a characteristic property of ceramic material?

High temperature stability
Low hardness
Low elongation
High mechanical strength

High mechanical strength

30. Which of the following is the major ingredient of traditional ceramics?

Clay
Silica
Feldspar
All above

All above

31. In safety glasses many layers of glass are bound together with

Transparent adhesives
Glue
Gum
Wire

Transparent adhesives

32. Which of the following glass is used in laboratory wares?

(A) Pyrex

(B) lead glass

(C) clear glass

(D) Laminated glass

Pyrex

33. Which of the following is used as stabilizer?

NaCl
SiO2
Na2O
Cao

Cao

34. In glass making, the whole combination of ingredients is called _____.

Batch
Mixture
Gangue
None of these

Batch

35. The melting of nearly all glass is done in a continuous tank furnace, which operates steadily over periods of up to

An hour
A month
A day
A week

A day

36. Which of the following is a heat-treatment cycle that prevents glass from harmful stress?

Forming
Batching
Annealing
None of these

Annealing

37. Which of the following is not a major contributor to engineering ceramics?

SiO2
SiC
Si3N4
Al2O3

SiO2

38. In glass or vitreous state solid the atoms are arranged in which fashion?

Regular fashion
Linear fashion
Random fashion
None of these

Random fashion

39. For quality control of Portland cement, the test essentially done is

Setting time
Soundness
Tensile strength
All of above

All of above

40. Which raw material is not present in the cement?

Limestone
Gypsum
Blast furnace slag
Red lead

Red lead

41. What is the average amount of alumina in the cement?

7.5%
28.5 %
21.5%
14.5%

28.5 %

42. To obtain cement dry powder, lime stones and shale or their slurry, is burnt in a rotary kiln at a temperature between

1300° and 1500°C
1200° and 1700°C
1400 and 1500°C
1300 and 1400°C

1400 and 1500°C

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