Solved MCQs on Cement and Glass with answers. 

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

1. Resistance to water
2. Water tightness of the structure
3. Desired durability
4. All of above

All of above

 

Which is/are existing as minor component of cement?

1. NaO
2. MgO
3. KO
4. All of above

All of above

 

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

1. 1.9 to 4.5
2. 2.5 to 3.5
3. 1.9 to 3.5
4. 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?

1. Stabilizers
2. Modifiers
3. Additives
4. None of these

Stabilizers

 

 

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

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

All of these

 

The main component of glass is:

1. Silica
2. Silicon
3. Caustic
4. Alumina

Silica

 

What is Clinker?

1. Roasted calcareous material
2. Roasted argillaceous material
3. Roasted calcareous and argillaceous material
4. Roasted gypsum

Roasted calcareous and argillaceous material

 

Cement is a mixture of ______.

1. Clay and clinker
2. Limestone and gypsum
3. Clay, limestone and gypsum
4. 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?

1. 15% lime stone and 55% clay
2. 50% lime stone and 50% clay
3. 75% lime stone and 25% clay
4. 30% lime stone and 15% clay

75% lime stone and 25% clay

 

Rotary spinning process is used to produce ____.

1. Glass marble
2. Optical fiber
3. Glass wool
4. All of above

Glass wool

 

What is the average amount of lime in the cement?

81. 81.5%
82. 26.2%
83. 61.5%
84. 41.5 %

61.5%

 

What is the average amount of silica in the cement?

42. 42.5 %
43. 63.5%
44. 22.5%
45. 22.5%

22.5%

 

 

Gets higher strength

 

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

1. Na₂CO3+ SiO₂ → 2Na2SiO3 + CO₂
2. Na₂CO₃+ SiO2 → Na₂SiO₃+2C0₂
3. Na₂CO₃+2SiOg → NagSiO₃ + CO₂
4. Na₂CO₃ + SiO₂ → Na₂SiO₃ + CO₂

Na₂CO₃ + SiO₂ → Na₂SiO₃ + CO₂

 

Glass industry needs soda ash with ____

1. Solids density 1.80 and bulk density 0.58
2. Solids density 2.36 and bulk density 0.6
3. Solids density 1.91 and bulk density 1.0
4. None of these

Solids density 1.91 and bulk density 1.0

 

 

Most commercial glasses consist of ________.

1. Silica
2. Soda
3. Lime
4. All above

Lime

 

Which is/are the major ingredients of the glass?

1. Silica
2. Lime
3. Soda ash
4. All of above

All of above

 

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

1. It is used to facilitate melting
2. It is broken pieces of glass
3. It helps to utilize the wastes
4. All of these

All of these

 

Which type of glass is transparent to UV light?

1. Lead glass
2. Window glass
3. Quartz glass/fused quartz
4. Flint glass

Quartz glass/fused quartz

 

Which of the following glass contains boron trioxide?

1. Quartz glass/fused quartz
2. Pyrex glass/sodium borosilicate glass
3. Window glass
4. Flint glass

Pyrex glass/sodium borosilicate glass

 

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

1. Quartz glass/fused quartz
2. Flint glass
3. Pyrex glass/sodium borosilicate glass
4. Window glass

Flint glass

 

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

1. Water glass
2. Quartz glass/fused quartz
3. Pyrex glass/sodium borosilicate glass
4. 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

1. Al₂O₃ and B₂0₃
2. MgO₂PbO and CaO
3. PbO and SiO₂
4. PbO and Al₂O₃

PbO and Al₂O₃

 

Windows glass contained silica % of _______.

1. 87%
2. 50%
3. 39%
4. 72%

87%

 

Which of the following is used for Annealing.

1. Converter
2. Batch
3. Klin

Klin

 

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

1. Fibrous glass
2. Soda-lime glass
3. Low silica glass
4. Pyrex glass

Pyrex glass

 

The word ‘ceramic’ is meant for ____?

1. Burnt material
2. Hard material
3. Soft material
4. Dry material

Burnt material

 

Which is not a characteristic property of ceramic material?

1. High temperature stability
2. Low hardness
3. Low elongation
4. High mechanical strength

High mechanical strength

 

Which of the following is the Major ingredients of traditional ceramics?

1. Clay
2. Silica
3. Feldspar
4. All above

All above

 

In safety glasses many layers of glass are bound together with

1. Transparent adhesives
2. Glue
3. Gum
4. 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.

1. NaCl
2. SiO₂
3. Na₂O
4. Cao

Cao

 

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

1. Batch
2. Mixture
3. Gangue
4. 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

1. a hour
2. a month
3. a day
4. a week

a day

 

 

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

1. Forming
2. Batching
3. Annealing
4. none of these

Annealing

 

 

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

1. SiO₂
2. SiC
3. Si₃N₄
4. Al₂O₃

SiO₂

 

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

1. Regular fashion
2. Linear fashion
3. Random fashion
4. None of these

Random fashion

 

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

1. Setting time
2. Soundness
3. Tensile strength
4. All of above

All of above

 

Which raw material is not present in the cement?

1. Lime stone
2. Gypsum’
3. Blast furnace slag
4. Red lead

Red lead

 

What is the average  amount of alumina in the cement?

1. 7.5%
2. 28.5 %
3. 21.5%
4. 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

1. 1300° and 1500°C
2. 1200° and 1700°C
3. 1400 and 1500°C
4. 1300 and 1400°C

1400 and 1500°C

Cement comprising higher percentage of gypsum than required,

1. Gets higher strength
2. Sets rapidly
3. Does not set at all
4. Sets slowly

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