Here are 1000 MCQs on Concrete Technology (Chapterwise).
1. What is Concrete Technology?
a) Concrete Technology deals with the study of bricks
b) Concrete Technology is the study of building materials
c) Concrete Technology deals with the study of properties of concrete
d) None of the mentioned
View Answer
Explanation: Concrete Technology is concerned with the study of concrete characteristics and their practical applications. Concrete is most often utilized as the foundation for most projects in the construction sector.
2. What is concrete?
a) A mixture of homogenous materials
b) A mixture of material and hydrogen
c) A mixture of cement and hydrogen sulphide
d) A mixture of cement, water, and aggregates
View Answer
Explanation: Concrete is a hardening building material made up of cement, fine aggregates (sand), and coarse aggregates combined with water. It is a significant building material that is utilized widely in the construction of buildings, bridges, highways, and dams.
3. Why concrete technology is needed?
a) Concrete technology is needed to build a building
b) Concrete technology is needed to address properties of concrete
c) Concrete technology is needed to produce building materials
d) None of the mentioned
View Answer
Explanation: Concrete technology covers all elements of concrete, from mix design to batching, mixing, transporting, putting, consolidating, finishing, and curing, and gives guidance on all aspects of concrete from mix design to batching, mixing, transporting, placing, consolidating, finishing, and curing.
4. Concrete technology is useful for civil engineers because it allows them to ________
a) know how to appropriately stock the materials needed for concrete
b) conduct various concrete tests
c) familiarise them with the fundamental principles of concrete
d) all of the mentioned
View Answer
Explanation: Concrete technology in civil engineering helps to know how to appropriately stock the materials needed for concrete, conduct various concrete tests and familiarise them with the fundamental principles of concrete.
5. Who is the father of concrete technology?
a) William Aspdin
b) Royston Saint John
c) Joseph Aspdin
d) None of the above
View Answer
Explanation: William Aspdin (September 23, 1815 – April 11, 1864), a pioneer of the Portland cement industry, was an English cement maker. He is often credited with inventing “modern” Portland cement. His father Joseph Aspdin has patented the method of cement manufacturing.
6. Which type of concrete is classified based on the design of concrete?
a) Plain
b) Reinforced
c) Prestressed
d) All of the above
View Answer
Explanation: Classification based on the design of concrete:

7. How many basic types of concrete are there?
a) 20 types
b) 24 types
c) 22 types
d) 21 types
View Answer
Explanation: Depending on the kind of construction, there are typically twenty-four distinct types of concrete used in the building and construction business.
8. What is the full form of HRM in concrete technology?
a) Human Resource Management
b) Human Reserve Management
c) Humidity and Resource Management
d) None of the above
View Answer
Explanation: In concrete technology, HRM is abbreviated as Human Resource Management.
9. What are the ingredients of concrete?
a) Binding material
b) Fine aggregate
c) Admixtures
d) All of the above
View Answer
Explanation: The binding material binds fine and coarse aggregate. Fine aggregates fill the space in the coarse aggregate. Admixtures affect the setting time of cement.
10. What is the objective of concrete technology?
a) To find the material strength
b) Calculate the amount of cement required
c) To define and understand concepts related to Cement
d) To define and understand concepts related to Concrete technology
View Answer
Explanation: To identify and comprehend ideas connected to concrete technology, which includes the various types and properties of concrete as well as various adhesive materials and their critical application in the construction of safe and cost-effective structures.
11. For a compressive strength of 3000 psi, the lightweight cement content is ____ pounds per cubic yard.
a) 400-590
b) 440-560
c) 430-560
d) 730-750
View Answer
Explanation: Compressive strengths of 3000 psi requires 440-560 pounds per cubic yard, while compressive strengths of 2500 psi requires 400-510 pounds per cubic yard.
12. What is the importance of the Standard Consistency Test?
a) It is used to determine the quality of water
b) It is used to determine the quality of aggregates
c) It is used to determine the quality of cement
d) None of the above
View Answer
Explanation: This test is used to assess how much water is needed to make a standard or typical consistency cement paste. This test also helps to determine soundness, compressive strengths and setting time of the cement.
13. Hydration of cement is chemical reaction of cement with __________
a) base
b) acid
c) salt and acid
d) water
View Answer
Explanation: As water comes into contact with cement particles, hydration reactions immediately starts at the surface of the particles. It is an exothermic reaction i.e., heat is released during the process. The resultant product of this reaction is hardened cement.
14. Which of the following cement is used in sewage and water treatment plants?
a) Sulphate Resisting Cement
b) Quick Setting Cement
c) Low Heat Cement
d) Rapid Hardening Cement
View Answer
Explanation: Sulphate resistance is excellent in cement with composition. This type of cement is utilized in the construction of foundations on soils with high sulphate levels in the subsoil.
15. Which of the following cement is used for interior and exterior decorative works?
a) Low Heat Cement
b) High Alumina Cement
c) Rapid Hardening Cement
d) Colored Cement
View Answer
Explanation: Colored cement is made by mixing 5-10% mineral pigments into Portland cement during the grinding process. The color added to the cement can fade but the cement retains its workability and durability.
16. Which of the following ratio is also known as water-cement ratio?
a) Weight of water to the weight of aggregates
b) Density of cement to the Density of cement
c) Weight of water to the weight of cement
d) Volume of cement to the volume of cement
View Answer
Explanation: The water–cement ratio is the weight of water in a concrete mix divided by the weight of cement. The strength of concrete is proportional to the Cement water ratio and inversely proportional to the w/c ratio.
17. How many layers of concrete are needed to fill a slump cone?
a) 5 layers by volume
b) 3 equal layers by height
c) 3 equal layers by volume
d) 5 layers
View Answer
Explanation: 3 equal layers by volume are placed. Fill the mold to a height of 12 inches in the shape of a frustum of a cone with a bottom diameter of 8 inches and a top diameter of 4 inches. Then, instead of filling it in three equal levels by height, fill it in three equal layers by volume.
18. What is the total percentage of aggregates in concrete in terms of volume?
a) 65-80%
b) 90%
c) 60-75%
d) 40%
View Answer
Explanation: Aggregates are split into two groups, accounting for 60-75 percent of the total volume of concrete. Gravels, crushed stone, Natural gravel, and sand, etc. are the aggregates of the concrete.
19. Crushed stone, gravel, and ordinary sand are examples of which type of cement aggregate?
a) Heavy-weight aggregate
b) Lightweight aggregate
c) Normal-weight aggregate
d) Both Normal-weight and Heavy-weight aggregate
View Answer
Explanation: Normal weight aggregates include crushed stone, gravel, and regular sand. They’re widely utilized in the production of regular and asphalt concrete, and highway sub-base.
20. What is the relation between the Coefficient of thermal expansion of concrete and the coefficient of thermal expansion in aggregates?
a) Equal
b) More than
c) Inversely proportional
d) Directly proportional
View Answer
Explanation: The coefficient of thermal expansion refers to either expansion or contraction of a material with temperature. The coefficient of thermal expansion rises in tandem with aggregates’ coefficient of thermal expansion, and vice versa.
21. What happens if mineral oil is present in mixing for concrete?
a) Gives more slump
b) Improves strength
c) Gives a smooth surface
d) Reduces strength
View Answer
Explanation: Mineral oil, when used in mixing, enhances the strength of the by up to 2%.
22. What is wet process?
a) Grinding and mixing of the raw materials in their overheated state
b) Grinding and mixing of the raw materials in their wet state
c) Grinding and mixing of the raw materials in their dry state
d) Grinding and mixing of the raw materials in their medium state
View Answer
Explanation: Wet process refers to the grinding and mixing of raw materials in their wet condition, while dry process refers to the grinding and mixing of raw materials in their dry form.
23. Which of the following increases the workability of concrete?
a) Decreasing size of aggregates
b) Increasing flaky aggregates
c) Increasing size of aggregates
d) Increasing fine aggregates
View Answer
Explanation: Workability should be obtained by the use of a well-graded aggregate that has the largest maximum particle size possible. Along with aggregate admixtures and air entrainment also increases the workability.
24. The form work is usually removed after ________ for walls, columns, and the vertical faces of all structural components.
a) 24 to 48 hours
b) 72 hours
c) 56 hours
d) 24 hours
View Answer
Explanation: In all circumstances, 3/7 of the aforesaid period will suffice for rapid hardening cement, with the exception of vertical sides of slabs, beams, and columns, which should be held for 24 hours.
25. How is Creep related to the strength of concrete?
a) Directly proportional
b) Inversely proportional
c) Equal
d) Similar
View Answer
Explanation: Creep increases as the cement ratio rises. In other words, it’s possible to say that creep is inversely related to concrete strength.
26. What is equivalent flexural strength?
a) The load value, which represents the average load-carrying capacity in the post-peak region up to a deflection of L/n
b) The value of mean equivalent flexural strength adjusted to mean flexural strength
c) The stress is derived when the peak load value is included in the rupture modulus equation
d) The stress value produced when Pe,n is utilized in the equation of modulus of rupture to represent the average flexural strength in the post-peak zone up to a specific deflection of L/n
View Answer
Explanation: Equivalent flexural strength is the stress value that represents the average flexural strength in the post-peak zone up to a certain deflection of L/n obtained when Pe,n is employed in the equation of modulus of rupture.
27. Which of the following stress can Plain cement concrete endure?
a) Shear stress
b) Tensile stress
c) Compressive stress
d) Tensile, compressive, and shear stresses
View Answer
Explanation: Plain cement concrete is strong in taking compressive stress but weak in tensile stress. It consists of water, cement, coarse aggregate, and fine aggregate.
28. Which of the following is a discontinuity that occurs during the casting of molten metal and is caused by splashing, surging, or interrupted pouring?
a) Flaking
b) Blow hole
c) Cold shut
d) Burst
View Answer
Explanation: Cold shut refers to a discontinuity in molten metal casting that can be generated by splashing, surging, halted pouring, or the meeting of two streams of metal coming from separate directions.
29. Which of the following property of a substance that resists abrasion or scratching that causes penetration or indentation?
a) Hardness
b) Stiffness
c) Toughness
d) Strength
View Answer
Explanation: Hardness is the property of a material that resists penetration or indentation by abrasion or scratching.
30. Which of the following region absorbs less radiation and transmits more during radiography test for concrete?
a) Low density region
b) Low and high density regions adsorb
c) High density region
d) Low and high density regions absorb and transmit same amount of radiation
View Answer
Explanation: In radiography test internal flaws are detected using short wavelength electromagnetic radiations such as X-rays and rays. The component to be tested is put in the direction of radiations generated by X-rays or rays in this approach.
31. Which of the following is not a type of Non-destructive testing?
a) Ultrasonic test
b) Eddy current testing
c) Compression testing
d) Visual testing
View Answer
Explanation: Destructive testing, such as compression testing, is a sort of destructive testing. This test is performed to assess how metals react when compressed. Non-destructive testing includes methods such as visual inspection, ultrasonic inspection, and eddy current testing.
32. For a compressive strength of 4000 psi, the light weight cement content is ________ pounds per cubic yard.
a) 630-750
b) 440-560
c) 740-840
d) 530-660
View Answer
Explanation: The lightweight cement content for compressive strengths is 4000 psi is 530-660 pounds per cubic yard, whereas compressive strengths of 2500 psi are 400-510 pounds per cubic yard.
33. What happens when chalk is used?
a) Crushed raw materials are put into a grinding mill, where they are dried and reduced to a fine powder
b) It must be sieved and fed into a rotating dish known as a granulator
c) It must be finely broken up and dispersed in water in a wash mill
d) It must be blasted, then crushed, usually in two smaller crushers
View Answer
Explanation: Chalk is finely broken up and disseminated in water in a wash mill when it is utilized. In a similar manner, the clay is broken up and combined with water, usually in a wash mill.
34. High strength concrete is defined purely on the basis of ____________
a) Tensile strength
b) Compressive strength
c) Good Aggregrates
d) Poor Aggregrates
View Answer
Explanation: High strength concrete is defined purely on the basis of its compressive strengths.
35. Which of the following is used to test the Standard consistency of cement?
a) Duff Abrams apparatus
b) Soundness meter
c) Vicat apparatus
d) Le Chatalier apparatus
View Answer
Explanation: The standard consistency of a cement paste is described as that which allows the vicat’s plunger to penetrate to a depth of 5 to 7mm from the vicat mould’s bottom.
36. What are Plasticizers?
a) Which reduces water for workability
b) Which oxidizes water for workability
c) Which decreases workability at the same water content
d) Which adds water for workability
View Answer
Explanation: Organic compounds, or mixtures of organic and inorganic chemicals, that allow for a lower water content for given workability, or provide better workability for the same water content.
Chapterwise Multiple Choice Questions on Concrete Technology
- Fresh Concrete
- Cement
- Types of Cement and Testing of Cement
- Aggregates and Testing of Aggregates
- Water
- Admixtures and Construction Chemicals
- Strength of Concrete
- Elasticity, Creep and Shrinkage
- Durability of Concrete
- Testing of Concrete
- Concrete Mix Design
- Quality Control
- Special Concrete and Concreting Methods
- IS Codes Related to Cement and Concrete
- Repair Technology for Concrete Structures
1. Concrete Technology MCQ on Cement
The section contains Concrete Technology multiple choice questions and answers on cement hydration, portland cement manufacture, wet and dry process.
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2. Concrete Technology MCQ on Types of Cement and Testing of Cement
The section contains Concrete Technology questions and answers on cement types and applications, testing the cement, standard consistency test, setting time and chemical composition test.
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3. Concrete Technology MCQ on Aggregates and Testing of Aggregates
The section contains Concrete MCQs on aggregates source and classification, strength, bulking and soundness of aggregates, thermal properties, aggregates testing and its properties.
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4. Concrete Technology Multiple Choice Questions on Water
The section contains Concrete Technology multiple choice questions with answers on water quality and concrete mixing using sea water.
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5. Concrete MCQ on Admixtures and Construction Chemicals
The section contains Concrete questions and answers on admixtures, damp and water proofing admixtures, plasticizers, workability, accelerators, silica fume, agents and concrete repair system.
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6. MCQ on Fresh Concrete
The section contains MCQs on workability measurement and testing, fresh concrete curing and manufacture.
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7. Multiple Choice Questions on Strength of Concrete
The section contains Concrete Technology multiple choice questions and answers on water cement and gel space ratio, concrete maturity concept, hpc, high and ultra high strength concrete.
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8. Concrete Technology MCQ on Elasticity, Creep and Shrinkage
The section contains Concrete Technology questions with answers on aggregates elastic properties, creep, factors affecting creep and shrinkage, shrinkage and its types.
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9. MCQ on Durability of Concrete
The section contains Concrete MCQ Questions on sulphate attack, permeability, strength and durability relationship.
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10. MCQ on Testing of Concrete
The section contains multiple choice questions and answers on compression test, hardness concrete curing, concrete flexural strength, destructive, non destructive and pulse velocity test.
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11. MCQ on Concrete Mix Design
The section contains questions with answers on concrete mix design, american concrete method, pumpable concrete and road method of mix designs, sampling and testing.
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12. MCQ on Quality Control of Concrete Technology
The section contains MCQs on concrete quality, quality control advantages, concrete flaws and quality management in concrete construction.
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13. MCQ on Special Concrete and Concreting Methods
The section contains multiple choice questions and answers on special concrete, light weight and structural light weight concrete, lwc mix design, aerated concrete, concrete cloth, hot and cold weather concreting, mix design, testing methods and new generation plasticizers.
14. Concrete Technology MCQ Questions on IS Codes Related to Cement and Concrete
The section contains Concrete Technology questions on codes related to cement and concrete.
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15. MCQ on Repair Technology for Concrete Structures
The section contains Concrete Technology MCQs on construction defects, distress symptoms and diagnosis, concrete cracking, cement applications, destructive and non destructive testing.
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Wish you the best in your endeavor to learn and master Concrete Technology!
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