1. What is the main difference between Plain Cement Concrete (PCC) and
Reinforced Cement Concrete (RCC)?
(a) PCC includes steel reinforcement, while RCC does not
(b) RCC includes steel reinforcement, while PCC does not
(c) Both PCC and RCC include steel reinforcement
(d) PCC is stronger in tension than RCC
2. Which of the following is NOT an advantage of reinforced concrete?
(a) Easily cast in any desired size and shape
(b) Strength of concrete increases with age
(c) High maintenance cost
(d) Good weather and fire resistance
3. Why is steel used in Reinforced Cement Concrete (RCC)?
(a) Steel is stronger in compression
(b) Steel is stronger in tension
(c) Steel prevents cracks in concrete
(d) Steel reacts chemically with cement to form a stronger bond
4. Which of the following structures commonly use RCC?
(a) Bridges and dams
(b) Wooden houses
(c) Plastic structures
(d) All of the above
5. What is a disadvantage of reinforced concrete?
(a) Cannot be easily dismantled and reused
(b) Requires no centering or curing
(c) Lightweight structure
(d) Easily used in trusses
6. Which of the following is an application of Plain Cement Concrete
(PCC)?
(a) Foundation bases
(b) Structural beams
(c) Multi-story columns
(d) Bridges
7. What property of concrete improves over time?
(a) Weight
(b) Strength
(c) Flexibility
(d) Permeability
8. Why is reinforced concrete preferred for structural applications?
(a) It is stronger in compression and tension
(b) It is easy to construct without curing
(c) It is very light in weight
(d) It cannot be used in buildings
9. What is the main reason for using different grades of concrete?
(a) To control the color of concrete
(b) To provide the required strength
(c) To reduce cost
(d) To increase permeability
10. Which of the following is NOT a common material in PCC?
(a) Cement
(b) Fine aggregate
(c) Coarse aggregate
(d) Steel
11. What is the primary composition of Ordinary Portland Cement (OPC)?
(a) Lime, silica, alumina, and iron oxide
(b) Fly ash and OPC clinkers
(c) High dicalcium silicate and reduced lime
(d) Cement clinkers and hydrophobic agents
12. Which type of cement is best suited for marine structures and chemical
plants?
(a) Ordinary Portland Cement (OPC)
(b) Portland Pozzolana Cement (PPC)
(c) Rapid Hardening Cement
(d) White Cement
13. Which type of cement has a low heat of hydration and is used for mass
concreting works like dams?
(a) Rapid Hardening Cement
(b) Low Heat Cement
(c) White Cement
(d) Sulphate Resistant Cement
14. Which type of cement is water-repellent and suitable for long-term storage
in humid conditions?
(a) Hydrophobic Cement
(b) Air Entraining Cement
(c) Sulphate Resistant Cement
(d) Colour Cement
15. What is the compressive strength of 33 Grade Portland Cement after 28
days?
(a) 33 N/mm²
(b) 43 N/mm²
(c) 53 N/mm²
(d) 53 S N/mm²
16. Which type of cement is used for decorative works like tile laying and
marble works?
(a) Sulphate Resistant Cement
(b) White Cement
(c) Low Heat Cement
(d) Portland Blast Furnace Slag Cement
17. What is the main application of Rapid Hardening Cement?
(a) Decorative works
(b) Mass concreting
(c) Repair works in bridges and roads
(d) Marine structures
18. Which cement is designed to resist sulphate attacks in structures?
(a) Portland Pozzolana Cement
(b) Sulphate Resistant Cement
(c) Hydrophobic Cement
(d) Ordinary Portland Cement
19. What is the main purpose of Air Entraining Cement?
(a) To improve aesthetic quality
(b) To improve workability and weather resistance
(c) To reduce heat of hydration
(d) To resist sulphate attacks
20. What does the “S” stand for in 53 S Grade Portland Cement?
(a) Standard
(b) Sulphate Resistant
(c) Strength
(d) Sleeper
21. Which type of cement is most suitable for construction in sulphate-prone
soils or water?
(a) Hydrophobic Cement
(b) Sulphate Resistant Cement
(c) Air Entraining Cement
(d) Low Heat Cement
22. What property of Rapid Hardening Cement makes it suitable for emergency
structures?
(a) Low heat of hydration
(b) Strength development in 24 hours
(c) Resistance to sulphate attacks
(d) Water-repellent properties
23. What is the primary advantage of using Portland Blast Furnace Slag Cement
in construction?
(a) High resistance to fire
(b) Low heat of hydration
(c) Water-tightness and workability
(d) Quick setting time
24. Which cement is specifically designed to improve the aesthetic appearance
of structures?
(a) White Cement
(b) Sulphate Resistant Cement
(c) Hydrophobic Cement
(d) Portland Pozzolana Cement
25. What is the typical composition of Portland Pozzolana Cement (PPC)?
(a) 100% OPC clinkers
(b) 30% pozzolanic material and 70% OPC clinkers
(c) 50% OPC clinkers and 50% blast furnace slag
(d) 65% OPC clinkers and 35% blast furnace slag
26. Which of the following is a property of Hydrophobic Cement?
(a) Entrains air bubbles to improve insulation
(b) Resists moisture and is suitable for storage in humid conditions
(c) Develops strength in 24 hours
(d) Generates low heat during hydration
27. What is the fineness of Ordinary Portland Cement (OPC)?
(a) 225 m²/kg
(b) 325 m²/kg
(c) 400 m²/kg
(d) 500 m²/kg
28. Which type of cement contains air-entraining agents like natural resins and
oils?
(a) Portland Blast Furnace Slag Cement
(b) Air Entraining Cement
(c) Rapid Hardening Cement
(d) Sulphate Resistant Cement
29. Why is Low Heat Cement used in mass concreting works like dams?
(a) It develops strength rapidly
(b) It generates minimal heat during hydration
(c) It has high sulphate resistance
(d) It improves aesthetic appearance
30. Which grade of Ordinary Portland Cement (OPC) is most commonly used for
high-strength applications?
(a) 33 Grade
(b) 43 Grade
(c) 53 Grade
(d) 53 S Grade
31. Which type of steel is mentioned under IS 456:2000?
(a) Mild steel and medium tensile steel
(b) High strength deformed steel bars
(c) Hard drawn steel wire fabric
(d) All of the above
32. What is the grade designation for Mild Steel according to IS
456:2000?
(a) Fe 350
(b) Fe 415
(c) Fe 250
(d) Fe 500
33. What does the 'D' in Fe 500 D stand for in high yield strength deformed
bars?
(a) Durability
(b) Ductility
(c) Density
(d) Deformation
34. What is the characteristic strength of a concrete grade M25?
(a) 15 N/mm²
(b) 20 N/mm²
(c) 25 N/mm²
(d) 30 N/mm²
35. What does the number in the grade designation of concrete (e.g., M25)
represent?
(a) The water-cement ratio of the mix
(b) The characteristic compressive strength at 28 days
(c) The weight of cement used per cubic meter
(d) The density of the concrete mix
36. Which of the following grades is categorized as high-strength
concrete?
(a) M20
(b) M55
(c) M65
(d) M40
37. For concrete with compressive strength greater than M55, what should be
considered?
(a) Standard design parameters
(b) Specialized literature and experimental results
(c) IS 875 design parameters
(d) Nominal mix proportions
38. Which grade of steel is classified as Medium Tensile Steel?
(a) Fe 250
(b) Fe 350
(c) Fe 415
(d) Fe 500
39. Characteristic strength of concrete is defined as the strength below which
not more than what percentage of test results are expected to fall?
(a) 1%
(b) 3%
(c) 5%
(d) 10%
40. What is the specified compressive strength of a 150mm concrete cube at 28
days for grade M30?
(a) 25 N/mm²
(b) 30 N/mm²
(c) 35 N/mm²
(d) 40 N/mm²
41. Which type of steel is commonly used in reinforced concrete
structures?
(a) Mild steel
(b) High strength deformed steel bars
(c) Hard drawn steel wire fabric
(d) Structural steel wires
42. What is the characteristic compressive strength of M40 grade
concrete?
(a) 20 N/mm²
(b) 30 N/mm²
(c) 40 N/mm²
(d) 50 N/mm²
43. For which grade of concrete is the standard design parameters not
applicable as per IS 456:2000?
(a) M20
(b) M30
(c) M55
(d) M65 and above
44. What is the main advantage of using high-strength deformed steel bars over
mild steel?
(a) Greater flexibility
(b) Higher ductility
(c) Greater strength in tension
(d) Easier handling on-site
45. Which group of concrete grades is categorized as Ordinary Concrete?
(a) M10, M15, M20
(b) M25, M30, M35
(c) M65, M70, M75
(d) M40, M45, M50
46. Which of the following is NOT a type of steel mentioned in IS
456:2000?
(a) Hard drawn steel wire fabric
(b) Structural steel wires
(c) Stainless steel
(d) High strength deformed steel bars
47. What is the characteristic compressive strength of M15 grade
concrete?
(a) 10 N/mm²
(b) 15 N/mm²
(c) 20 N/mm²
(d) 25 N/mm²
48. What is the grade of concrete used for structural elements requiring high
compressive strength, like skyscrapers?
(a) M15
(b) M25
(c) M65
(d) M10
49. Which of the following is NOT a characteristic property of Fe 415
steel?
(a) High ductility
(b) High yield strength
(c) High corrosion resistance
(d) High tensile strength
50. Which type of steel is commonly used in structural steel frames for
industrial buildings?
(a) Hard drawn steel wire fabric
(b) Structural steel wires
(c) Mild steel
(d) High strength deformed steel bars
51. What does the "Nominal Mix Concrete" refer to as per IS 456:2000?
(a) Concrete mix designed for M25 and higher grades
(b) Concrete mix with proportions specified by fixed ratios of cement, sand,
and coarse aggregate
(c) Concrete mix designed for the highest strength
(d) Concrete mix with no specific strength requirements
52. Which grades are classified as "Lean Mix Concrete"?
(a) M15 and M20
(b) M5 and M7.5
(c) M25 and M30
(d) M35 and above
53. What is the nominal mix proportion for M15 grade concrete?
(a) 1:5:10
(b) 1:4:8
(c) 1:3:6
(d) 1:2:4
54. Which of the following is NOT true about "Design Mix Concrete"?
(a) It is preferred over nominal mix concrete
(b) It is economical and designed for desired strength and workability
(c) It is used for grades M5, M7.5, and M10
(d) It is determined based on laboratory tests
55. For which grades of concrete is nominal mix proportioning
recommended?
(a) M25 and higher
(b) M15 and higher
(c) M20 and lower
(d) M30 and higher
56. What is the nominal mix proportion for M20 grade concrete?
(a) 1:5:10
(b) 1:1.5:3
(c) 1:3:6
(d) 1:2:4
57. Which component is referred to as "FA" in the nominal mix
proportions?
(a) Coarse Aggregate
(b) Fine Aggregate
(c) Cement
(d) Water
58. What is the significance of "Design Mix Concrete" as per IS 456:2000?
(a) It provides fixed proportions of materials for all grades
(b) It ensures workability, strength, and durability in an economical way
(c) It is used only for decorative concrete applications
(d) It is less durable than nominal mix concrete
59. What is the nominal mix proportion for M10 grade concrete?
(a) 1:4:8
(b) 1:3:6
(c) 1:2:4
(d) 1:1.5:3
60. Why is "Design Mix Concrete" preferred over "Nominal Mix Concrete"?
(a) It requires less water
(b) It provides higher workability and is more economical
(c) It uses fixed proportions for all ingredients
(d) It is used only for lean concrete mixes
61. What is the Modular Ratio (m) in reinforced concrete as per IS
456:2000?
(a) The ratio of tensile stress in steel to concrete
(b) The ratio of the modulus of elasticity of steel to that of concrete
(c) The ratio of compressive strength of concrete to tensile strength of
steel
(d) The ratio of concrete strength to steel strength
62. What is the formula for calculating the modular ratio (m) as per IS
456:2000?
(a) m=3σc280
(b) m=2803σcbc
(c) m=σcbc280
(d) m=EcEs
63. For M20 grade concrete, what is the permissible stress in compression in
bending (σcbc)?
(a) 5.0 N/mm²
(b) 7.0 N/mm²
(c) 8.5 N/mm²
(d) 10.0 N/mm²
64. What is the equivalent concrete area when steel reinforcement is provided
in the compression zone?
(a) As
(b) m×As
(c) Ac
(d) 1.5m×As
65. Why is the modular ratio used in the analysis of RC members?
(a) To determine the strength of steel reinforcement
(b) To convert the stress in steel to an equivalent stress in concrete
(c) To calculate the permissible stress in compression
(d) To reduce the strain in concrete
66. For M15 grade concrete, what is the permissible stress in compression in
bending?
(a) 3.0 N/mm²
(b) 5.0 N/mm²
(c) 7.0 N/mm²
(d) 8.5 N/mm²
67. What assumption is made for strain in steel and concrete in reinforced
concrete?
(a) Strain in steel is greater than strain in concrete
(b) Strain in concrete is greater than strain in steel
(c) Strain in steel is equal to strain in concrete
(d) Strain in steel and concrete are independent of each other
68. What is the permissible stress in bending compression (σcbc) for M30 grade concrete?
(a) 7.0 N/mm²
(b) 8.5 N/mm²
(c) 10.0 N/mm²
(d) 12.0 N/mm²
69. What is the modular ratio if the permissible stress in bending compression
(σcbc) for M25 concrete is 8.5 N/mm²?
(a) 10.0
(b) 11.0
(c) 12.0
(d) 13.0
70. According to IS 456:2000, the actual stress in steel is equal to what in
terms of the modular ratio?
(a) Modular ratio times the stress in surrounding concrete
(b) Stress in concrete divided by the modular ratio
(c) Actual strain divided by modular ratio
(d) Compressive strength of concrete divided by modular ratio
71. Which IS code provides the guidelines for different types of loads on
structures?
(a) IS 456:1987
(b) IS 456:2000
(c) IS 875:1987
(d) IS 875:2000
72. What does the dead load in a building primarily consist of?
(a) Weight of furniture and machinery
(b) Weight of walls, partitions, floors, roofs, and permanent construction
(c) Weight due to snow accumulation on roofs
(d) Load caused by wind pressure on the structure
73. What is the unit weight of reinforced concrete as per IS standards?
(a) 24 kN/m³
(b) 25 kN/m³
(c) 28 kN/m³
(d) 30 kN/m³
74. Imposed loads, also known as live loads, include which of the
following?
(a) Furniture and machinery weights
(b) Walls and roof weights
(c) Wind pressure
(d) Snow accumulation
75. In which regions of India are snow loads particularly considered in
design?
(a) Coastal regions
(b) Plains
(c) Mountainous regions in northern India
(d) Desert regions
76. Which of the following is an example of an "Other Load"?
(a) Wind load
(b) Earthquake load
(c) Snow load
(d) Dead load
77. Which method of design considers the elastic behavior of materials?
(a) Limit state method
(b) Working stress method
(c) Ultimate load method
(d) Experimental investigations
78. Which design method is most widely used for modern structural design as per
IS 456:2000?
(a) Working stress method
(b) Limit state method
(c) Ultimate load method
(d) Method of experimental investigations
79. What is the primary characteristic of wind loads on structures?
(a) They are permanent and static
(b) They occur due to occupancy of the building
(c) They are caused by very strong winds during the lifetime of the
structure
(d) They are irrelevant in mountainous regions
80. What is the unit weight of plain concrete as per IS standards?
(a) 22 kN/m³
(b) 24 kN/m³
(c) 25 kN/m³
(d) 26 kN/m³
81. Which of the following loads is considered due to the effect of
temperature?
(a) Dead loads
(b) Snow loads
(c) Other loads
(d) Wind loads
82. Which method of design involves the study of failure loads of
structures?
(a) Working stress method
(b) Limit state method
(c) Ultimate load method
(d) Experimental investigations
83. Which load includes movable partitions in a building?
(a) Dead load
(b) Imposed load
(c) Wind load
(d) Snow load
84. Which load is most critical for designing roofs in regions of high
snowfall?
(a) Dead load
(b) Snow load
(c) Imposed load
(d) Wind load
85. What are the main types of loads considered in structural design as per IS
875?
(a) Dead loads and wind loads only
(b) Imposed loads and snow loads only
(c) Dead loads, imposed loads, wind loads, snow loads, and other loads
(d) Snow loads and temperature effects only
