Full-Length Mock Test 4 — RRB JE CBT 2 Technical Abilities Pattern (100 MCQs)

Section A: Building Materials and Construction (20 Questions)

1. The chemical compound primarily responsible for early strength gain in cement is:
   (a) Tricalcium silicate (C3S) (b) Tetracalcium aluminoferrite (C4AF) (c) Free lime alone (d) Gypsum alone
2. Tricalcium aluminate (C3A) in cement is primarily associated with:
   (a) Rapid heat of hydration and vulnerability to sulphate attack (b) Slow strength gain only, with no heat of hydration (c) Colour of the cement only (d) Fineness of grinding only
3. Sulphate-resisting cement is specifically formulated with:
   (a) Low C3A content (b) High C3A content (c) No calcium compounds at all (d) Pure gypsum with no clinker
4. Low heat cement is particularly suitable for:
   (a) Mass concrete construction such as dams (b) Cold weather concreting exclusively (c) Precast units requiring instant strength (d) Decorative plasterwork only
5. The specific gravity of normal aggregate used in concrete is typically around:
   (a) 2.6 to 2.7 (b) 0.5 (c) 7.8 (d) 10.0
6. The flakiness index of aggregate measures the proportion of particles that are:
   (a) Thin/flat relative to their other dimensions (b) Perfectly cubical (c) Perfectly spherical (d) Extremely large in size only
7. The elongation index of aggregate measures the proportion of particles whose length exceeds:
   (a) A specified multiple of their mean dimension (b) Their width by a factor of exactly one (c) Zero, i.e. no particles at all (d) The size of the sieve used
8. The impact value test on aggregates measures resistance to:
   (a) Sudden impact/shock loading (b) Only chemical attack (c) Only water absorption (d) Only colour fading
9. The Los Angeles abrasion test evaluates aggregate resistance to:
   (a) Abrasion and impact combined, in a rotating drum with steel balls (b) Only water absorption (c) Only fire (d) Only freezing
10. A second-class brick, compared to a first-class brick, generally has:
    (a) Slightly lower strength and a less regular shape (b) Identical properties in every respect (c) Higher strength always (d) No practical use in construction at all
11. Overburnt bricks (jhama bricks) are sometimes used for:
    (a) Foundation work/soling due to their hardness, despite irregular shape (b) Ornamental facing exclusively due to their smooth finish (c) Roofing tiles exclusively (d) Never used in any construction
12. Hollow/perforated bricks are primarily used to:
    (a) Reduce weight and improve thermal insulation (b) Increase load-bearing capacity beyond solid bricks always (c) Eliminate the need for mortar (d) Increase water absorption deliberately
13. Fibreboard and particle board are manufactured from:
    (a) Wood particles/fibres bonded with adhesive under pressure (b) Pure steel sheets (c) Pure cement with no wood content (d) Pure glass fibres with no wood
14. Laminated (ply) glass used in some building applications provides:
    (a) Improved safety by holding fragments together when broken (b) Reduced transparency to zero (c) Increased brittleness only (d) No safety benefit whatsoever
15. Bitumen used in road construction is primarily valued for its:
    (a) Waterproofing and binding properties (b) High compressive strength alone (c) High tensile strength in reinforcement (d) Transparency
16. A "damp proof course" is typically constructed using materials such as:
    (a) Cement concrete, bitumen felt, or similar impervious layers (b) Ordinary untreated timber only (c) Loose sand with no binder (d) Unfired clay bricks only
17. Which of these best describes "shuttering" or "formwork" in concrete construction?
    (a) A temporary mould to hold fresh concrete until it hardens (b) A permanent structural steel member (c) A finishing plaster coat (d) A type of reinforcement bar
18. Plastering of walls is done primarily to:
    (a) Provide a smooth, protective, and even surface finish (b) Increase the structural load-bearing capacity substantially (c) Replace the need for brickwork (d) Increase water absorption of the wall deliberately
19. A "string course" in masonry construction is:
    (a) A narrow horizontal band, often projecting, for decoration or weathering (b) A vertical structural column (c) A type of foundation exclusively (d) A type of roof truss member
20. Waterproofing compounds added to concrete or plaster primarily aim to:
    (a) Reduce the permeability of the material to water (b) Increase the permeability of the material to water (c) Increase the setting time indefinitely (d) Replace the need for cement entirely

Section B: Surveying (20 Questions)

21. A "meridian" in surveying refers to a line indicating:
    (a) A fixed direction, typically true or magnetic north-south (b) Only an arbitrary east-west line (c) Only a property boundary (d) Only a contour line
22. In a closed traverse, the algebraic sum of all interior angles (for n sides) should theoretically equal:
    (a) (2n − 4) × 90 degrees (b) 360 degrees always regardless of n (c) 180 degrees always regardless of n (d) 0 degrees always
23. In a closed traverse, the sum of latitudes and the sum of departures should each theoretically equal:
    (a) Zero (b) 360 (c) 180 (d) A value equal to the traverse's total perimeter
24. Which correction is applied to a measured tape length due to a sagging chain/tape not being fully taut?
    (a) Sag correction (b) Temperature correction only, with no sag consideration (c) Slope correction only, with no sag consideration (d) No correction is ever needed for sagging
25. Temperature correction to a steel tape's measured length is needed because:
    (a) Steel expands/contracts with temperature changes relative to standard/calibration temperature (b) The tape's colour fades with temperature (c) The tape becomes magnetic at high temperature (d) The tape's markings disappear at low temperature
26. Slope correction is applied to a measured distance to obtain the:
    (a) Equivalent horizontal distance (b) Equivalent vertical distance (c) Magnetic bearing (d) Area enclosed
27. The instrument used to measure vertical angles as well as horizontal angles in one setup is the:
    (a) Theodolite (b) Chain (c) Cross staff (d) Ranging rod alone
28. "Balancing" a traverse (e.g., by the Bowditch rule) is done to distribute the:
    (a) Closing error proportionally among the traverse legs (b) Total survey cost among team members (c) Weight of the instrument among surveyors (d) Magnetic declination among stations
29. A "plane table" survey directly produces a:
    (a) Graphical plot of the area in the field itself (b) Numerical coordinate list only, with no plot (c) A purely digital output with no paper/board involved (d) A soil classification report
30. The method of "radiation" in plane table surveying involves:
    (a) Drawing rays to various points directly from a single instrument station (b) Moving the plane table to every single point on site individually (c) Measuring only vertical angles (d) Ignoring distance measurement entirely
31. The method of "intersection" in plane table surveying determines a point's position by:
    (a) Drawing rays from at least two known stations that intersect at the point (b) Measuring distance from a single station only, with no second reference (c) Using only magnetic bearings with no plotting (d) Random estimation with no instrument use
32. A "traverse computation" typically includes calculation of:
    (a) Latitudes, departures, and closing error (b) Only cement content (c) Only concrete slump (d) Only soil bearing capacity
33. Which of the following defines "true meridian" as opposed to "magnetic meridian"?
    (a) The direction of the geographic north-south line through the observer's location, unaffected by magnetic variation (b) An arbitrary direction chosen by the surveyor (c) The direction of a nearby building (d) A line always parallel to the equator
34. The vernier scale on a theodolite/level is used to:
    (a) Read fractional parts of the smallest main-scale division precisely (b) Measure horizontal distance directly with no other reading needed (c) Measure temperature (d) Measure soil moisture
35. "Face left" and "face right" observations with a theodolite are taken primarily to:
    (a) Eliminate instrumental errors by averaging both readings (b) Increase the survey duration deliberately with no accuracy benefit (c) Measure only vertical distances (d) Avoid the need for any angle computation at all
36. A "permanent adjustment" of a surveying instrument refers to an adjustment that:
    (a) Once made, generally remains valid over multiple survey sessions unless disturbed (b) Must be repeated before every single individual reading (c) Applies only to chains, never to levels/theodolites (d) Is purely cosmetic with no functional effect
37. The two-peg test is used to check and adjust:
    (a) The collimation error of a level (b) The magnetic declination of a compass (c) The plasticity index of soil (d) The slump of concrete
38. Errors of "closure" in levelling (misclosure between the computed and known final RL) indicate:
    (a) Accumulated instrumental/observational error requiring adjustment (b) A perfectly accurate survey with nothing further needed (c) A property boundary dispute (d) A soil classification result
39. GPS-based control surveys are commonly used today to establish:
    (a) Precise reference points/control networks over large areas efficiently (b) Only very small single-room measurements (c) Only underground utility depth with no surface use (d) Only concrete strength values
40. The primary purpose of establishing control points before detailed topographic surveying is to:
    (a) Provide a reliable and consistent framework to which all detail is referenced (b) Increase the total survey cost with no technical benefit (c) Eliminate the need for any further detailed survey (d) Serve only a decorative/administrative function

Section C: Concrete Technology, RCC, and Theory of Structures (20 Questions)

41. The characteristic strength of concrete is defined as the strength below which not more than what percentage of test results are expected to fall?
    (a) 5 percent (b) 50 percent (c) 95 percent (d) 100 percent
42. Concrete's tensile strength, compared to its compressive strength, is generally:
    (a) Much lower, roughly one-tenth or less (b) Much higher (c) Exactly equal (d) Unrelated in any way
43. The modular ratio in working stress design of RCC is the ratio of:
    (a) Modulus of elasticity of steel to that of concrete (b) Modulus of elasticity of concrete to that of steel (c) Compressive strength of concrete to that of steel (d) Density of steel to that of concrete
44. A "one-way slab" is a slab where:
    (a) The ratio of longer to shorter span exceeds about 2, causing it to bend primarily in one direction (b) The ratio of longer to shorter span is always exactly 1 (c) It never has any support at all (d) It bends equally in every direction always regardless of span ratio
45. A "two-way slab" is a slab where:
    (a) The ratio of longer to shorter span is less than about 2, causing significant bending in both directions (b) It has no support along any edge (c) It bends only along the diagonal (d) It is always circular in shape
46. Shear reinforcement (stirrups) is typically provided in a beam in the form of:
    (a) Vertical or inclined links around the main longitudinal bars (b) Only horizontal bars parallel to the main bars with no vertical component (c) No reinforcement at all, only plain concrete (d) Only bent-up bars with no vertical links ever used
47. The purpose of "bent-up bars" in RCC beams is to:
    (a) Resist shear near supports by utilising tension steel where bending moment is lower (b) Increase the beam's self-weight only (c) Replace the need for main tension steel entirely (d) Serve a purely decorative function
48. A "flat slab" is a slab system that:
    (a) Is supported directly on columns without beams, often with column capitals/drop panels (b) Always requires beams on every side (c) Cannot support any load at all (d) Is used exclusively for foundations
49. The purpose of providing distribution/secondary reinforcement in a one-way slab is to:
    (a) Resist shrinkage/temperature stresses and distribute loads transversely (b) Resist the main bending moment entirely, replacing main steel (c) Serve no structural function whatsoever (d) Increase the slab's thickness requirement
50. Creep in concrete refers to:
    (a) Gradual increase in strain under sustained constant load over time (b) Instantaneous elastic deformation only (c) A chemical reaction unrelated to loading (d) A decrease in strain under load over time
51. Shrinkage in concrete refers to:
    (a) Volume reduction primarily due to loss of moisture over time (b) Volume increase due to hydration heat (c) A property exclusive to steel, not concrete (d) An instantaneous effect occurring only at initial set
52. A "compression member" (column) primarily resists:
    (a) Axial compressive load, often combined with bending (b) Only tensile load (c) Only torsional load with no axial component (d) No load at all structurally
53. An eccentrically loaded column experiences, in addition to direct compressive stress:
    (a) Bending stress due to the eccentricity of the load (b) No additional stress of any kind (c) Only shear stress with no bending (d) Only torsional stress with no bending
54. The "radius of gyration" of a section is defined using:
    (a) The square root of (moment of inertia divided by area) (b) The direct product of moment of inertia and area (c) The perimeter of the section only (d) The centroid location only, with no relation to inertia
55. Which of the following beam types has both ends fixed against rotation and translation?
    (a) A fixed beam (b) A simply supported beam (c) A cantilever beam (d) An overhanging beam only
56. An "overhanging beam" is one that:
    (a) Extends beyond one or both of its supports (b) Has no supports at all (c) Is always fixed at both ends with no overhang (d) Is used only underwater
57. The "point of contraflexure" in a beam is where the bending moment:
    (a) Changes sign (from sagging to hogging or vice versa) (b) Is always maximum (c) Is always exactly at midspan regardless of loading (d) Is undefined mathematically
58. The maximum shear force in a simply supported beam under a uniformly distributed load typically occurs:
    (a) At the supports (b) At mid-span (c) At the quarter span always (d) Nowhere; shear force is zero everywhere for UDL
59. Working Stress Method (WSM) of RCC design is based primarily on:
    (a) Elastic theory with permissible stresses at working loads (b) Ultimate collapse behaviour exclusively (c) Purely empirical trial and error with no theoretical basis (d) Ignoring both concrete and steel properties entirely
60. Limit State Method (LSM) of RCC design considers:
    (a) Both limit state of collapse and limit state of serviceability (b) Only the limit state of collapse, ignoring serviceability entirely (c) Only aesthetic appearance (d) Only the cost of materials with no structural check

Section D: Geotechnical, Hydraulics, and Environmental Engineering (20 Questions)

61. The void ratio of a soil is defined as the ratio of:
    (a) Volume of voids to volume of solids (b) Volume of solids to total volume (c) Weight of water to weight of solids (d) Total volume to volume of solids
62. Water content (moisture content) of a soil is defined as the ratio of:
    (a) Weight of water to weight of solids, usually expressed as a percentage (b) Weight of solids to weight of water (c) Volume of water to volume of voids only (d) Volume of air to total volume
63. Degree of saturation of a soil refers to the ratio of:
    (a) Volume of water to volume of voids (b) Volume of solids to total volume (c) Weight of water to total weight (d) Volume of air to volume of solids
64. Specific gravity of soil solids is typically in the range of approximately:
    (a) 2.65 to 2.75 (b) 0.5 to 0.7 (c) 7.0 to 8.0 (d) 10 to 15
65. A soil with zero plasticity index (non-plastic) is typically classified as:
    (a) Sand or silt with negligible clay content (b) Highly plastic clay (c) Organic peat exclusively (d) Always a rock fragment
66. The "active earth pressure" on a retaining wall occurs when the wall:
    (a) Moves away from the backfill, allowing the soil to expand slightly (b) Moves into the backfill, compressing it (c) Remains perfectly rigid with zero movement (d) Is entirely submerged with no backfill present
67. The "passive earth pressure" on a retaining wall occurs when the wall:
    (a) Moves into the backfill, compressing the soil (b) Moves away from the backfill (c) Is removed entirely (d) Has no soil contact at all
68. Rankine's theory of earth pressure assumes the backfill soil to be:
    (a) Cohesionless, homogeneous, and the wall face frictionless (b) Perfectly rigid steel (c) Always fully saturated concrete (d) Entirely gaseous
69. A retaining wall's stability is typically checked against:
    (a) Overturning, sliding, and bearing capacity failure (b) Only aesthetic appearance (c) Only its paint colour (d) Only its construction cost
70. Which of the following best describes "specific retention" of an aquifer?
    (a) The volume of water retained against gravity drainage per unit volume of aquifer (b) The total discharge capacity of a well (c) The permeability coefficient only (d) The depth to the water table only
71. A "confined aquifer" is one that is:
    (a) Bounded above and below by impermeable layers, with water under pressure (b) Open directly to the atmosphere with no confining layer (c) Always completely dry (d) Located only above ground level
72. An "unconfined aquifer" has a water table that:
    (a) Is exposed to atmospheric pressure with a free water surface (b) Is always under high artesian pressure (c) Never varies with rainfall (d) Cannot be tapped by any well
73. A weir is a hydraulic structure primarily used to:
    (a) Measure or control the flow of water over a raised crest (b) Filter drinking water chemically (c) Store cement (d) Test soil permeability
74. The coefficient of discharge for a weir/orifice accounts for:
    (a) The difference between actual and theoretical discharge due to losses/contraction (b) The colour of the water only (c) The temperature of water only, with no flow relevance (d) The cost of the structure
75. Cavitation in hydraulic structures/pumps occurs due to:
    (a) Formation and collapse of vapour bubbles due to localized low pressure (b) Excessive lubrication only (c) Overheating of electrical wiring exclusively (d) Excess paint on the impeller
76. A "sluice gate" is commonly used in canals/dams to:
    (a) Control/regulate the flow of water (b) Generate electricity independently with no other function (c) Purify water chemically (d) Test soil compaction
77. Aeration as a water/wastewater treatment step is primarily used to:
    (a) Increase dissolved oxygen and remove dissolved gases/volatile compounds (b) Add colour to water (c) Increase turbidity deliberately (d) Add pathogens intentionally
78. The primary purpose of a trickling filter in wastewater treatment is:
    (a) Biological treatment of wastewater as it trickles over a bed of biological growth media (b) Mechanical screening of large solids only (c) Chemical disinfection using chlorine gas exclusively (d) Storage of untreated sewage indefinitely
79. Noise pollution from construction equipment is commonly mitigated through:
    (a) Use of noise barriers, equipment maintenance, and time-of-day restrictions (b) Ignoring the issue entirely with no mitigation (c) Increasing equipment power output only (d) Removing all safety equipment
80. Environmental Impact Assessment (EIA) for major infrastructure projects is primarily intended to:
    (a) Evaluate and mitigate potential environmental effects before project approval (b) Increase project cost with no environmental benefit (c) Replace the need for any technical design (d) Serve only a ceremonial function with no regulatory bearing

Section E: General Awareness, Computer Applications, and Current Affairs (20 Questions)

81. The Indian Institutes of Technology (IITs) are premier institutions primarily focused on:
    (a) Engineering, science, and technology education (b) Only medical education (c) Only law education (d) Only agricultural education exclusively
82. Which of the following best describes the "Make in India" initiative?
    (a) A programme to encourage domestic and foreign investment in manufacturing (b) A programme focused solely on foreign travel promotion (c) A programme with no economic component (d) A programme focused solely on agriculture exports
83. The Ministry primarily responsible for road and highway infrastructure policy in India is the:
    (a) Ministry of Road Transport and Highways (b) Ministry of Railways (c) Ministry of Home Affairs (d) Ministry of External Affairs
84. A database management system (DBMS) is software primarily used to:
    (a) Store, organise, and retrieve data efficiently (b) Only display images (c) Only play video files (d) Only manage printer settings
85. Which of these is an example of a widely used DBMS software?
    (a) MySQL (b) MS Paint (c) Adobe Photoshop (d) VLC Media Player
86. In computing, "software" refers to:
    (a) Programs and instructions that run on computer hardware (b) The physical components of a computer only (c) Only the monitor and keyboard (d) Only the internet cable
87. "Hardware" in computing refers to:
    (a) The physical components of a computer system (b) Only programs and instructions with no physical component (c) Only internet connectivity (d) Only user data files
88. E-governance initiatives in India aim primarily to:
    (a) Deliver government services to citizens using digital technology (b) Eliminate all government services entirely (c) Replace elections with digital voting exclusively with no other e-governance function (d) Serve only internal government email needs
89. Which Indian body is primarily responsible for standard-setting and quality certification (ISI mark) of consumer/industrial products?
    (a) Bureau of Indian Standards (BIS) (b) Reserve Bank of India (c) Election Commission of India (d) Central Board of Secondary Education
90. The "Atal Mission for Rejuvenation and Urban Transformation" (AMRUT) primarily focuses on:
    (a) Improving basic urban infrastructure like water supply and sewerage (b) Only railway electrification (c) Only defence procurement (d) Only agricultural subsidies
91. Which of the following best describes a "Public-Private Partnership" (PPP) model commonly used in infrastructure projects?
    (a) Collaboration between government and private entities to finance/build/operate infrastructure (b) Exclusively government-funded projects with no private involvement (c) Exclusively private-funded projects with no government involvement or oversight (d) A model used only for IT software projects with no relevance to infrastructure
92. India's National Disaster Management Authority (NDMA) primarily coordinates:
    (a) Disaster preparedness, mitigation, and response at the national level (b) Currency printing (c) Railway ticketing (d) Passport issuance
93. Which of the following organisations is primarily responsible for standardising and certifying quality in construction materials testing labs in India?
    (a) Bureau of Indian Standards (BIS), through relevant IS codes and certification (b) Reserve Bank of India (c) Election Commission (d) Ministry of External Affairs
94. "E-mail" is best described as:
    (a) A method of sending/receiving messages electronically over a network (b) A physical postal delivery method only (c) A type of computer virus (d) A type of printer
95. A "spreadsheet formula" beginning with an equals sign (=) is used to:
    (a) Perform a calculation or function on cell data (b) Format text colour only (c) Insert an image only (d) Delete a worksheet
96. Which of the following best describes "Wi-Fi"?
    (a) A wireless networking technology for connecting devices to a network/internet (b) A type of physical network cable (c) A type of computer virus (d) A type of printer
97. The Indian government's "Swachh Bharat Mission" primarily focuses on:
    (a) Sanitation and cleanliness improvement across India (b) Railway electrification exclusively (c) Highway construction exclusively (d) Banking sector reform exclusively
98. Which of the following best describes "GST" (Goods and Services Tax) in India?
    (a) A unified indirect tax levied on the supply of goods and services (b) A direct tax on personal income exclusively (c) A tax applicable only to imports (d) A tax applicable only to agricultural produce
99. The apex bank responsible for monetary policy and currency issuance in India is the:
    (a) Reserve Bank of India (RBI) (b) State Bank of India (SBI) (c) Bureau of Indian Standards (d) Securities and Exchange Board of India
100. Skill development and vocational training initiatives in India, relevant to technical trades, are commonly supported under programmes such as:
     (a) Pradhan Mantri Kaushal Vikas Yojana (b) Only university-level PhD programmes exclusively (c) Only foreign scholarship schemes exclusively (d) No such programme exists in India

Answer Key with Explanations

1.(a) C3S drives early strength gain in cement.

2.(a) C3A causes rapid heat of hydration and sulphate-attack vulnerability.

3.(a) Sulphate-resisting cement has low C3A content.

4.(a) Low heat cement suits mass concrete like dams.

5.(a) Normal aggregate specific gravity is about 2.6-2.7.

6.(a) Flakiness index measures thin/flat particle proportion.

7.(a) Elongation index measures particles exceeding a length multiple of mean dimension.

8.(a) The impact test measures resistance to sudden shock loading.

9.(a) The LA abrasion test measures combined abrasion/impact resistance.

10.(a) Second-class bricks have slightly lower strength/regularity than first-class.

11.(a) Overburnt jhama bricks suit foundation/soling work due to hardness.

12.(a) Hollow bricks reduce weight and improve insulation.

13.(a) Fibreboard/particle board are wood particles bonded under pressure.

14.(a) Laminated glass improves safety by holding fragments together.

15.(a) Bitumen is valued for waterproofing/binding properties.

16.(a) DPC uses impervious materials like cement concrete or bitumen felt.

17.(a) Shuttering/formwork is a temporary mould for fresh concrete.

18.(a) Plastering provides a smooth, protective surface finish.

19.(a) A string course is a narrow decorative/weathering horizontal band.

20.(a) Waterproofing compounds reduce material permeability to water.

21.(a) A meridian indicates a fixed north-south reference direction.

22.(a) Sum of interior angles of a closed traverse equals (2n-4)×90 degrees.

23.(a) Sum of latitudes and departures in a closed traverse should each equal zero.

24.(a) Sag correction addresses a non-taut, sagging tape.

25.(a) Temperature correction addresses steel expansion/contraction.

26.(a) Slope correction converts a slope distance to horizontal distance.

27.(a) A theodolite measures both horizontal and vertical angles.

28.(a) Balancing distributes closing error proportionally among traverse legs.

29.(a) Plane table surveying directly produces a field graphical plot.

30.(a) Radiation draws rays to points from a single station.

31.(a) Intersection uses rays from at least two known stations.

32.(a) Traverse computation includes latitudes, departures, and closing error.

33.(a) True meridian is the geographic north-south direction, unaffected by magnetic variation.

34.(a) A vernier scale reads fractional parts of the main scale precisely.

35.(a) Face left/right observations eliminate instrumental errors by averaging.

36.(a) A permanent adjustment generally remains valid across sessions.

37.(a) The two-peg test checks/adjusts a level's collimation error.

38.(a) Closure errors indicate accumulated instrumental/observational error.

39.(a) GPS control surveys efficiently establish reference points over large areas.

40.(a) Control points provide a consistent framework for referencing detail surveys.

41.(a) Characteristic strength allows not more than 5 percent of results to fall below it.

42.(a) Concrete's tensile strength is much lower than its compressive strength.

43.(a) Modular ratio is steel's modulus of elasticity over concrete's.

44.(a) A one-way slab has a span ratio exceeding about 2, bending mainly one way.

45.(a) A two-way slab has a span ratio below about 2, bending significantly both ways.

46.(a) Stirrups are vertical/inclined links around main bars.

47.(a) Bent-up bars resist shear near supports using tension steel where BM is lower.

48.(a) Flat slabs are supported directly on columns, often with capitals/drop panels.

49.(a) Distribution steel resists shrinkage/temperature stress and distributes load transversely.

50.(a) Creep is gradual strain increase under sustained load.

51.(a) Shrinkage is volume reduction from moisture loss.

52.(a) Columns primarily resist axial compressive load, often with bending.

53.(a) Eccentric loading adds bending stress from load eccentricity.

54.(a) Radius of gyration is the square root of (I/A).

55.(a) A fixed beam has both ends fixed against rotation/translation.

56.(a) An overhanging beam extends beyond one or both supports.

57.(a) The point of contraflexure is where bending moment changes sign.

58.(a) Max shear in a UDL-loaded simply supported beam occurs at the supports.

59.(a) WSM uses elastic theory with permissible working-load stresses.

60.(a) LSM considers both collapse and serviceability limit states.

61.(a) Void ratio is volume of voids to volume of solids.

62.(a) Water content is weight of water to weight of solids, as a percentage.

63.(a) Degree of saturation is volume of water to volume of voids.

64.(a) Soil solids' specific gravity is typically about 2.65-2.75.

65.(a) Non-plastic soils are typically sand/silt with negligible clay.

66.(a) Active pressure occurs when the wall moves away from the backfill.

67.(a) Passive pressure occurs when the wall moves into the backfill.

68.(a) Rankine's theory assumes cohesionless, homogeneous soil and a frictionless wall face.

69.(a) Retaining walls are checked for overturning, sliding, and bearing failure.

70.(a) Specific retention is water retained against gravity drainage per unit aquifer volume.

71.(a) A confined aquifer is bounded by impermeable layers with pressurised water.

72.(a) An unconfined aquifer has a free water table exposed to atmosphere.

73.(a) A weir measures/controls flow over a raised crest.

74.(a) The discharge coefficient accounts for losses/contraction between actual and theoretical discharge.

75.(a) Cavitation involves vapour bubble formation/collapse from localized low pressure.

76.(a) Sluice gates control/regulate canal/dam flow.

77.(a) Aeration increases dissolved oxygen and removes volatile compounds.

78.(a) Trickling filters biologically treat wastewater over a growth-media bed.

79.(a) Noise mitigation uses barriers, maintenance, and time restrictions.

80.(a) EIA evaluates/mitigates environmental effects before project approval.

81.(a) IITs focus on engineering, science, and technology education.

82.(a) Make in India encourages manufacturing investment.

83.(a) The Ministry of Road Transport and Highways handles road policy.

84.(a) A DBMS stores, organises, and retrieves data efficiently.

85.(a) MySQL is a widely used DBMS.

86.(a) Software refers to programs/instructions running on hardware.

87.(a) Hardware refers to physical computer components.

88.(a) E-governance delivers government services digitally.

89.(a) BIS handles standard-setting/ISI certification.

90.(a) AMRUT focuses on urban infrastructure like water supply/sewerage.

91.(a) PPP is government-private collaboration on infrastructure.

92.(a) NDMA coordinates disaster preparedness/mitigation/response nationally.

93.(a) BIS standardises/certifies construction materials testing via IS codes.

94.(a) E-mail sends/receives electronic messages over a network.

95.(a) A formula starting with = performs a calculation/function.

96.(a) Wi-Fi is wireless networking technology for connecting devices.

97.(a) Swachh Bharat Mission focuses on sanitation/cleanliness.

98.(a) GST is a unified indirect tax on goods/services supply.

99.(a) RBI is India's apex monetary policy/currency-issuing bank.

100.(a) PMKVY supports skill development/vocational training.