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[Top & Important MCQs] 47 Cement – Building Materials MCQs | Exam point of view

Here you can read very important 47 Civil Engineering MCQs in the topic of Cement – Building Materials.  


Civil MCQs: 1  For testing compressive strength of cement, the size of cube used is

Option A) 50 mm

Option B) 70.6 mm

Option C) 100 mm

Option D) 150 mm

Correct Answer:  50 mm


Civil MCQs: 2 The most commonly used retarder in cement is

Option A) Gypsum

Option B) Calcium chloride

Option C) Calcium carbonate

Option D) None of the above

Correct Answer:  Gypsum


Civil MCQs: 3 The main ingredients of Portland cement are

Option A) Lime and silica

Option B) Lime and alumina

Option C) Silica and alumina

Option D) Lime and iron

Correct Answer:  Lime and silica


Civil MCQs: 4 After storage, the strength of cement

Option A) Decreases

Option B) Increases

Option C) Remains same

Option D) May increase or decrease

Correct Answer:  Decreases


Civil MCQs: 5 Rapid hardening cement attains early strength due to

Option A) Larger proportion of lime grounded finer than normal cement

Option B) Lesser proportion of lime grounded coarser than normal cement

Option C) Lesser proportion of lime grounded finer than normal cement

Option D) Excess percentage of gypsum

Correct Answer:  Larger proportion of lime grounded finer than normal cement


Civil MCQs: 6 For the manufacture of Portland cement, the proportions of raw materials used, are

Option A) Lime 63% ; silica 22% ; other ingredients 15%

Option B) Lime 22% ; silica 63% ; other ingredients 15%

Option C) Silica 40% ; lime 40% ; other ingredients 20%

Option D) Silica 70% ; lime 20% ; other ingredients 10%

Correct Answer:  Lime 63% ; silica 22% ; other ingredients 15%


Civil MCQs: 7 Rapid hardening cement contains

Option A) Tri-calcium silicate

Option B) Tri-calcium aluminate

Option C) Tetra-calcium alumino-ferrite

Option D) Di-calcium silicate

Correct Answer:  Tri-calcium silicate


Civil MCQs: 8 Name the type of cement from the following for canal linings:

Option A) Sulphate resisting cement

Option B) Rapid hardening cement

Option C) Quick setting cement

Option D) Pozzolana cement

Correct Answer:  Sulphate resisting cement


Civil MCQs: 9 Soundness test of cement determines

Option A) Quality of free lime

Option B) Ultimate strength

Option C) Durability

Option D) Initial setting

Correct Answer:  Quality of free lime


Civil MCQs: 10 Good quality cement contains higher percentage of

Option A) Tri-calcium silicate

Option B) Di-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra calcium alumino ferrite

Correct Answer:  Tri-calcium silicate


Civil MCQs: 11 For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of

Option A) 1:2

Option B) 1:3

Option C) 1:4

Option D) 1:6

Correct Answer:  1:3


Civil MCQs: 12 Early attainment of strength in rapid hardening cement is mainly due to

Option A) Gypsum

Option B) Finer grinding

Option C) Tri-calcium silicate

Option D) Tri-calcium aluminate

Correct Answer:  Finer grinding


Civil MCQs: 13 Which of the following cements contains maximum percentage of dicalcium silicate?

Option A) Ordinary Portland cement

Option B) Low heat cement

Option C) Rapid hardening cement

Option D) Sulphate resisting cement

Correct Answer:  Low heat cement


Civil MCQs: 14 Gypsum consists of

Option A) H2S and CO2

Option B) CaSO4 and H2O

Option C) Lime and H2O

Option D) CO2 and Calcium

Correct Answer:  CaSO4 and H2O


Civil MCQs: 15 Soundness of cement is tested by

Option A) Vicat’s apparatus

Option B) Le-chatelier apparatus

Option C) Compressive strength testing apparatus

Option D) None of these

Correct Answer:  Le-chatelier apparatus


Civil MCQs: 16 The initial setting time for ordinary Portland cement as per IS specifications should not be less than

Option A) 10 minutes

Option B) 30 minutes

Option C) 60 minutes

Option D) 600 minutes

Correct Answer:  30 minutes


Civil MCQs: 17 Which of the following cements is suitable for use in massive concrete structures such as large dams?

Option A) Ordinary Portland cement

Option B) Low heat cement

Option C) Rapid hardening cement

Option D) Sulphate resisting cement

Correct Answer:  Low heat cement


Civil MCQs: 18 Addition of pozzolana to ordinary Portland cement increases

Option A) Bleeding

Option B) Shrinkage

Option C) Permeability

Option D) Heat of hydration

Correct Answer:  Shrinkage


Civil MCQs: 19 Le-Chatelier’s device is used for determining the

Option A) Setting time of cement

Option B) Soundness of cement

Option C) Tensile strength of cement

Option D) Compressive strength of cement

Correct Answer:  Soundness of cement


Civil MCQs: 20 To retard the initial setting time of cement, the compound responsible, is

Option A) Tri-calcium silicate

Option B) Gypsum

Option C) Di-calcium silicate

Option D) Tri-calcium aluminate

Correct Answer:  Gypsum


Civil MCQs: 21 Ultimate strength to cement is provided by

Option A) Tri-calcium silicate

Option B) Di-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra calcium alumino ferrite

Correct Answer:  Di-calcium silicate


Civil MCQs: 22 Pick up the compound responsible for early strength of cement from the following:

Option A) Tetra-calcium alumino-ferrite

Option B) Tri-calcium silicate

Option C) Tri-calcium aluminate

Option D) Di-calcium silicate

Correct Answer:  Tri-calcium silicate


Civil MCQs: 23 The compound of Portland cement which contributes to the strength after two to three years is

Option A) Tri-calcium silicate

Option B) Di-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra-calcium alumino ferrite

Correct Answer:  Di-calcium silicate


Civil MCQs: 24 With storage, strength of cement

Option A) Increases

Option B) Decreases

Option C) Remains the same

Option D) None to these

Correct Answer:  Decreases


Civil MCQs: 25 The constituent of cement which is responsible for all the undesirable properties of cement is

Option A) Di-calcium silicate

Option B) Tri-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra calcium alumino ferrite

Correct Answer:  Tri-calcium aluminate


Civil MCQs: 26 Gypsum is a

Option A) Mechanically formed sedimentary rock

Option B) Igneous rock

Option C) Chemically precipitated sedimentary rock

Option D) Metamorphic rock

Correct Answer:  Chemically precipitated sedimentary rock


Civil MCQs: 27 According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than

Option A) 7 MPa

Option B) 11.5 MPa

Option C) 16 MPa

Option D) 21 MPa

Correct Answer:  16 MPa


Civil MCQs: 28 The main constituent of cement which is responsible for initial setting of cement is

Option A) Di-calcium silicate

Option B) Tri-calcium silicate

Option C) Tri-calcium aluminate

Option D) All of the above

Correct Answer:  Tri-calcium aluminate


Civil MCQs: 29 The normal consistency of ordinary Portland cement is about

Option A) 0.1

Option B) 0.2

Option C) 0.3

Option D) 0.4

Correct Answer:  0.3


Civil MCQs: 30 If water required for 1 bag of cement is 30 litres, the water cement ratio is:

Option A) 0.4

Option B) 0.5

Option C) 0.6

Option D) None of these

Correct Answer:  0.6


Civil MCQs: 31 The percentage of water for normal consistency, is

Option A) 5% to 15%

Option B) 10% to 25%

Option C) 15% to 25%

Option D) 20% to 30%

Correct Answer:  15% to 25%


Civil MCQs: 32 Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

Option A) Quick setting cement

Option B) Rapid hardening cement

Option C) White cement

Option D) Low heat Portland cement

Correct Answer:  White cement


Civil MCQs: 33 Initial setting of cement is caused due to

Option A) Tri-calcium silicate

Option B) Di-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra calcium alumino ferrite

Correct Answer:  Tri-calcium aluminate


Civil MCQs: 34 Quick setting cement is produced by adding

Option A) Less amount of gypsum in very fine powdered form

Option B) More amount of gypsum in very fine powdered form

Option C) Aluminium sulphate in very fine powdered form

Option D) Pozzolana in very fine powdered form

Correct Answer:  Aluminium sulphate in very fine powdered form


Civil MCQs: 35 The compound of Portland cement which reacts immediately with water and also sets first is

Option A) Tri-calcium silicate

Option B) Di-calcium silicate

Option C) Tri-calcium aluminate

Option D) Tetra calcium alumino ferrite

Correct Answer:  Tri-calcium aluminate


Civil MCQs: 36 The commonly used raw material in the manufacture of cement, is

Option A) Slate

Option B) Sand stone

Option C) Lime stone

Option D) Basalt

Correct Answer:  Lime stone


Civil MCQs: 37 If ‘P’is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is

Option A) 0.70 P

Option B) 0.75 P

Option C) 0.80 P

Option D) 0.85 P

Correct Answer:  0.85 P


Civil MCQs: 38 Strength of cement concrete primarily depends upon

Option A) Quality of water

Option B) Quantity of aggregate

Option C) Quantity of cement

Option D) Water-cement ratio

Correct Answer:  Water-cement ratio


Civil MCQs: 39 As per IS specifications, the maximum final setting time for ordinary Portland cement should be

Option A) 30 minutes

Option B) 1 hour

Option C) 6 hours

Option D) 10 hours

Correct Answer:  10 hours


Civil MCQs: 40 Pick up the correct statement regarding low heat cement from the following:

Option A) It possesses less compressive strength

Option B) Its initial setting time is about one hour

Option C) Its final setting time is about 10 hours

Option D) All the above

Correct Answer:  All the above


Civil MCQs: 41 The cement becomes unsound by the presence of excess

Option A) Sulphur

Option B) Magnesia

Option C) Lime

Option D) All of these

Correct Answer:  All of these


Civil MCQs: 42 Pick up the correct statement from the following:

Option A) The lime in excess makes the cement unsound and causes the cement to expand and disintegrate

Option B) The silica in excess makes the cement stronger but its setting time also increases

Option C) The excess amount of alumina weakens the cement

Option D) All the above

Correct Answer:  All the above


Civil MCQs: 43 Cement is said to be of good quality if

Option A) Its colour is not greenish grey

Option B) One feels cool by thrusting one’s hand in the cement bag

Option C) A handful of cement thrown into a bucket of water does not float

Option D) None of these

Correct Answer:  None of these


Civil MCQs: 44 Portland pozzolana cement possesses

Option A) Higher resistance to chemical attack

Option B) Lower heat of hydration

Option C) Lower shrinkage on drying

Option D) All the above

Correct Answer:  All the above


Civil MCQs: 45 The main constituent of fly-ash, is

Option A) Aluminium oxide

Option B) Silica

Option C) Ferrous oxide

Option D) All of these

Correct Answer:  All of these


Civil MCQs: 46 The initial setting time of hydraulic lime, is

Option A) 30 minutes

Option B) 60 minutes

Option C) 90 minutes

Option D) 120 minutes

Correct Answer:  120 minutes


Civil MCQs: 47 For a 50 kg cement bag water required, is

Option A) 16.5 litres

Option B) 18.5 litres

Option C) 20.5 litres

Option D) 20.5 litres

Correct Answer:  20.5 litres


 

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