Solved MCQs on Cement and Glass with answers.Â
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
Which is/are existing as minor component of cement?
- NaO
- MgO
- KO
- All of above
All of above
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
Which of the following are the Chemical compounds, which are added to reduce the reactivity of glass?
- Stabilizers
- Modifiers
- Additives
- None of these
Stabilizers
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 air
- It is stable in air and water
- All of these
All of these
The main component of glass is:
- Silica
- Silicon
- Caustic
- Alumina
Silica
What is Clinker?
- Roasted calcareous material
- Roasted argillaceous material
- Roasted calcareous and argillaceous material
- Roasted gypsum
Roasted calcareous and argillaceous material
Cement is a mixture of ______.
- Clay and clinker
- Limestone and gypsum
- Clay, limestone and gypsum
- Limestone and clay
Clay, limestone and gypsum
What is the percentage of the composition of mixture of clay and lime stone in the raw material for cement?
- 15% lime stone and 55% clay
- 50% lime stone and 50% clay
- 75% lime stone and 25% clay
- 30% lime stone and 15% clay
75% lime stone and 25% clay
Rotary spinning process is used to produce ____.
- Glass marble
- Optical fiber
- Glass wool
- All of above
Glass wool
What is the average amount of lime in the cement?
- 81.5%
- 26.2%
- 61.5%
- 41.5 %
61.5%
What is the average amount of silica in the cement?
- 42.5 %
- 63.5%
- 22.5%
- 22.5%
22.5%
Gets higher strength
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
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
Most commercial glasses consist of ________.
- Silica
- Soda
- Lime
- All above
Lime
Which is/are the major ingredients of the glass?
- Silica
- Lime
- Soda ash
- All of above
All of above
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
Which type of glass is transparent to UV light?
- Lead glass
- Window glass
- Quartz glass/fused quartz
- Flint glass
Quartz glass/fused quartz
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
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
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
Glaze surface is ______surface.
(A) Crack surface
(B) Porous Surface
(C) Smooth surface
(D) None of above
Smooth surface
Lead glass comprise main Constituents
- Al2O3 and B203
- MgO2PbO and CaO
- PbO and SiO2
- PbO and Al2O3
PbO and Al2O3
Windows glass contained silica % of _______.
- 87%
- 50%
- 39%
- 72%
87%
Which of the following is used for Annealing.
- Converter
- Batch
- Klin
Klin
The main constituents of _______ are born, oxide and silica.
- Fibrous glass
- Soda-lime glass
- Low silica glass
- Pyrex glass
Pyrex glass
The word ‘ceramic’ is meant for ____?
- Burnt material
- Hard material
- Soft material
- Dry material
Burnt material
Which is not a characteristic property of ceramic material?
- High temperature stability
- Low hardness
- Low elongation
- High mechanical strength
High mechanical strength
Which of the following is the Major ingredients of traditional ceramics?
- Clay
- Silica
- Feldspar
- All above
All above
In safety glasses many layers of glass are bound together with
- Transparent adhesives
- Glue
- Gum
- Wire
Transparent adhesives
Which of the following  glass is used in laboratory wares.
(A) Pyrex
(B) lead glass
(C) clear glass
(D) Laminated glass
Pyrex
Which of the following is used as stabilizer.
- NaCl
- SiO2
- Na2O
- Cao
Cao
In glass making, the whole combination of ingredients is called _____.
- Batch
- Mixture
- Gangue
- none of these
Batch
The melting of nearly all glass is done in a continuous tank furnace, which operates steadily over periods of up to
- a hour
- a month
- a day
- a week
a day
Which of the following is a heat-treatment cycle that prevents glass from harmful stress.
- Forming
- Batching
- Annealing
- none of these
Annealing
Which of the following is not a major contributor of engineering ceramics?
- SiO2
- SiC
- Si3N4
- Al2O3
SiO2
In glass or vitreous state solid the atoms are arranged in which fashion?
- Regular fashion
- Linear fashion
- Random fashion
- None of these
Random fashion
For quality control of Portland cement, the test essentially done is
- Setting time
- Soundness
- Tensile strength
- All of above
All of above
Which raw material is not present in the cement?
- Lime stone
- Gypsum’
- Blast furnace slag
- Red lead
Red lead
What is the average amount of alumina in the cement?
- 7.5%
- 28.5 %
- 21.5%
- 14.5%
28.5 %
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
Cement comprising higher percentage of gypsum than required,
- Gets higher strength
- Sets rapidly
- Does not set at all
- Sets slowly