Cement and Glass MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 21, 2025

1. : Which of the following can be ensured by proper proportioning of concrete?
(A) Resistance to water
(B) Water tightness of the structure
(C) Desired durability
(D) All of above

2. : Which is/are existing as minor components of cement?
(A) NaO
(B) MgO
(C) KO
(D) All of above

3. : What is the proportion of lime, alumina, or silica for good cement?
(A) 1.9 to 4.5
(B) 2.5 to 3.5
(C) 1.9 to 3.5
(D) 1.9 to 2.5

4. : Which of the following are the chemical compounds that are added to reduce the reactivity of glass?
(A) Stabilizers
(B) Modifiers
(C) Additives
(D) None of these

5. : Which of the following statements is/are correct with regard to hydraulic cement?
(A) It is insoluble in water after setting
(B) It has the ability to set and develop strength in the air
(C) It is stable in air and water
(D) All of these

6. : The main component of glass is:
(A) Silica
(B) Silicon
(C) Caustic
(D) Alumina

7. : What is Clinker?
(A) Roasted calcareous material
(B) Roasted argillaceous material
(C) Roasted calcareous and argillaceous material
(D) Roasted gypsum

8. : Cement is a mixture of ______.
(A) Clay and clinker
(B) Limestone and gypsum
(C) Clay, limestone, and gypsum
(D) Limestone and clay

9. : What is the percentage of the composition of the mixture of clay and limestone in the raw material for cement?
(A) 15% limestone and 55% clay
(B) 50% limestone and 50% clay
(C) 75% limestone and 25% clay
(D) 30% limestone and 15% clay

10. : Rotary spinning process is used to produce ____.
(A) Glass marble
(B) Optical fiber
(C) Glass wool
(D) All of above

11. : What is the average amount of lime in the cement?
(A) 81.5%
(B) 26.2%
(C) 61.5%
(D) 41.5%

12. : What is the average amount of silica in the cement?
(A) 42.5%
(B) 63.5%
(C) 22.5%
(D) 22.5%

13. : Which is the correct chemical equation representing the production of glass?
(A) Na₂CO₃ + SiO₂ → 2Na₂SiO₃ + CO₂
(B) Na₂CO₃ + SiO₂ → Na₂SiO₃ + 2CO₂
(C) Na₂CO₃ + 2SiO₃ → Na₂SiO₃ + CO₂
(D) Na₂CO₃ + SiO₂ → Na₂SiO₃ + CO₂

14. : The glass industry needs soda ash with ____
(A) Solids density 1.80 and bulk density 0.58
(B) Solids density 2.36 and bulk density 0.6
(C) Solids density 1.91 and bulk density 1.0
(D) None of these

15. : Most commercial glasses consist of ________.
(A) Silica
(B) Soda
(C) Lime
(D) All above

16. : Which is/are the major ingredients of glass?
(A) Silica
(B) Lime
(C) Soda ash
(D) All of above

17. : The pieces of waste glass are known as cullet. Which statement is with concern to cullet?
(A) It is used to facilitate melting
(B) It is broken pieces of glass
(C) It helps to utilize the wastes
(D) All of these

18. : Which type of glass is transparent to UV light?
(A) Lead glass
(B) Window glass
(C) Quartz glass/fused quartz
(D) Flint glass

19. : Which of the following glass contains boron trioxide?
(A) Quartz glass/fused quartz
(B) Pyrex glass/sodium borosilicate glass
(C) Window glass
(D) Flint glass

20. : Which glass is used to make artificial gems, lenses, prisms, etc.?
(A) Quartz glass/fused quartz
(B) Flint glass
(C) Pyrex glass/sodium borosilicate glass
(D) Window glass

21. : Which of the following is the mixture of potassium and sodium silicate?
(A) Water glass
(B) Quartz glass/fused quartz
(C) Pyrex glass/sodium borosilicate glass
(D) Flint glass

22. : Glaze surface is ______ surface.
(A) Crack surface
(B) Porous Surface
(C) Smooth surface
(D) None of above

23. : Lead glass comprises main constituents of which of the following?
(A) Al₂O₃ and B₂O₃
(B) MgO₂PbO and CaO
(C) PbO and SiO₂
(D) PbO and Al₂O₃

24. : Windows glass contains silica % of _______.
(A) 87%
(B) 50%
(C) 39%
(D) 72%

25. : Which of the following is used for Annealing?
(A) Converter
(B) Batch
(C) Klin
Answer: (C) Klin

26. : The main constituents of _______ are boron, oxide, and silica.
(A) Fibrous glass
(B) Soda-lime glass
(C) Low silica glass
(D) Pyrex glass

27. : The word ‘ceramic’ is meant for ____?
(A) Burnt material
(B) Hard material
(C) Soft material
(D) Dry material

28. : Which is not a characteristic property of ceramic material?
(A) High temperature stability
(B) Low hardness
(C) Low elongation
(D) High mechanical strength

29. : Which of the following is the major ingredient of traditional ceramics?
(A) Clay
(B) Silica
(C) Feldspar
(D) All above

30. : In safety glasses many layers of glass are bound together with
(A) Transparent adhesives
(B) Glue
(C) Gum
(D) Wire

31. : Which of the following glass is used in laboratory wares?
(A) Pyrex
(B) Lead glass
(C) Clear glass
(D) Laminated glass

32. : Which of the following is used as stabilizer?
(A) NaCl
(B) SiO₂
(C) Na₂O
(D) CaO

33. : In glass making, the whole combination of ingredients is called _____.
(A) Batch
(B) Mixture
(C) Gangue
(D) None of these

34. : The melting of nearly all glass is done in a continuous tank furnace, which operates steadily over periods of up to
(A) An hour
(B) A month
(C) A day
(D) A week

35. : Which of the following is a heat-treatment cycle that prevents glass from harmful stress?
(A) Forming
(B) Batching
(C) Annealing
(D) None of these

36. : Which of the following is not a major contributor to engineering ceramics?
(A) SiO₂
(B) SiC
(C) Si₃N₄
(D) Al₂O₃

37. : In glass or vitreous state solid the atoms are arranged in which fashion?
(A) Regular fashion
(B) Linear fashion
(C) Random fashion
(D) None of these

38. : For quality control of Portland cement, the test essentially done is
(A) Setting time
(B) Soundness
(C) Tensile strength
(D) All of above

39. : Which raw material is not present in the cement?
(A) Limestone
(B) Gypsum
(C) Blast furnace slag
(D) Red lead

40. : What is the average amount of alumina in the cement?
(A) 7.5%
(B) 28.5%
(C) 21.5%
(D) 14.5%

41. : To obtain cement dry powder, limestone and shale or their slurry is burnt in a rotary kiln at a temperature between
(A) 1300° and 1500°C
(B) 1200° and 1700°C
(C) 1400° and 1500°C
(D) 1300° and 1400°C