WBMSC SAE Civil 2025 (2 November 2025) question paper with answers

Q1.The instrument used to measure horizontal angles is

1. Level
2. Theodolite
3. Compass
4. Chain

Q2.The branch of mechanics that deals with bodies at rest or in equilibrium is

1. Dynamics
2. Kinematics
3. Kinetics
4. Statics

Q3.The moment of inertia of a triangular section (base b, height h) about a centroidal axis parallel to the base, is

1. bh³/12
2. bh³/3
3. bh³/36
4. bh³/8

Q4.A ball of mass 1 kg moving with a velocity of 2 m/sec collides with a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be

1. zero
2. 0.5 m/sec
3. 1.0 m/sec
4. 2.0 m/sec

Q5.Pick up the item of work not included in the plinth area estimate.

1. Wall thickness
2. Courtyard area
3. Verandah area
4. W.C. area

Q6.If the tensile stress of a steel rod of diameter D is 1400 kg/cm² and the bond stress is 6 kg/cm², the required bond (development) length of the rod is

1. 30D
2. 40D
3. 50D
4. 59D

Q7.If a 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, the BOD of the sewage is

1. 200 ppm
2. 225 ppm
3. 250 ppm
4. None of the above

Q8.The coagulant widely used for sewage treatment is

1. alum
2. ferric chloride
3. ferric sulphate
4. chlorinated copperas

Q9.In India the recording type rain gauge generally used is

1. Weighing type
2. Tipping type
3. Float recording type
4. None of the above

Q10.Precipitation caused due to upward movement of warmer air as compared to surrounding air, is called

1. cyclonic precipitation
2. convective precipitation
3. orographic precipitation
4. None of the above

Q11.If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as

1. 0.10 m
2. 0.20 m
3. 0.5 m
4. 1.0 m

Q12.A district road with a bituminous pavement has a horizontal curve of radius 1000 m for a design speed of 75 kmph. The super-elevation is

1. 1 in 40
2. 1 in 50
3. 1 in 60
4. 1 in 70

Q13.Cement grouted pavement is classified as

1. Rigid pavement
2. Semi-rigid pavement
3. Flexible pavement
4. None of the above

Q14.The wall constructed for the stability of the back-filling portion of a road on the downhill side is known as

1. Retaining wall
2. Breast wall
3. Parapet wall
4. All of the above

Q15.The Indian Roads Congress (IRC) was founded and constituted with its headquarters at New Delhi, in

1. 1924
2. 1927
3. 1930
4. 1934

Q16.Various activities of a project are shown on bar charts by

1. vertical lines
2. horizontal lines
3. dots
4. crosses

Q17.The specific retention is least in case of

1. clay
2. sand
3. silt
4. coarse gravel

Q18.Aeration of water is done to remove

1. odour
2. colour
3. hardness
4. turbidity

Q19.An earth formation which, although porous and capable of absorbing water, does not provide an appreciable supply to wells, is known as

1. Aquifer
2. Aquiclude
3. Aquifuge
4. None of the above

Q20.The ratio of shearing stress to shearing strain within the elastic limit is known as

1. modulus of elasticity
2. shear modulus of elasticity
3. bulk modulus of elasticity
4. tangent modulus of elasticity

Q21.Web crippling generally occurs at the point where

1. bending moment is maximum
2. shearing force is minimum
3. concentrated loads act
4. deflection is maximum

Q22.Factor of safety is the ratio of

1. yield stress to working stress
2. tensile stress to working stress
3. compressive stress to working stress
4. bearing stress to working stress

Q23.The deflection of beams may be decreased by

1. increasing the depth of beam
2. increasing the span
3. decreasing the depth of beam
4. increasing the width of beam

Q24.The maximum area of tension reinforcement in beams shall not exceed

1. 0.15%
2. 1.5%
3. 4.0%
4. 1.0%

Q25.The minimum cube strength of concrete used for a prestressed member is

1. 50 kg/cm²
2. 150 kg/cm²
3. 250 kg/cm²
4. 350 kg/cm²

Q26.An under-reinforced section means

1. steel is provided at the under side only
2. steel provided is insufficient
3. steel provided on one face only
4. steel will yield first

Q27.Minimum spacing between horizontal parallel reinforcement of the same size should not be less than

1. one diameter
2. 2.5 diameters
3. 3.0 diameters
4. 4.0 diameters

Q28.The stresses developed in concrete and steel in a reinforced concrete beam of 25 cm width and 70 cm effective depth are 62.5 kg/cm² and 250 kg/cm² respectively. If m=15, the depth of its neutral axis is

1. 20 cm
2. 25 cm
3. 30 cm
4. 35 cm

Q29.For no tension in a compression member, the maximum eccentricity permitted along an axis is

1. d/3
2. d/4
3. d/6
4. d/8

Q30.The moment of inertia of a hollow circular section about the x-x and y-y axes (D = outer diameter, d = cut-out diameter) is

1. π(D⁴−d⁴)/64 (same about both axes)
2. π(D³−d³)/32
3. π(D⁴−d⁴)/32
4. π(D³−d³)/64

Q31.Euler's critical load for a column (both ends hinged) is

1. π²EI/L
2. π²EI/L²
3. πEI/L²
4. πEI/L

Q32.Compression members tend to buckle in the direction of the

1. least radius of gyration
2. minimum cross-section
3. axis of load
4. perpendicular to the axis of the load

Q33.The section modulus of a circular section about an axis through its C.G. is

1. πD³/12
2. πD³/16
3. πD³/64
4. πD³/32

Q34.A hollow circular section having 8 cm outer diameter and 6 cm inner diameter; the radius of gyration will be

1. 1.5 cm
2. 2.0 cm
3. 2.5 cm
4. 3 cm

Q35.The minimum grade of concrete to be used in reinforced concrete as per IS: 456-2000 is

1. M15
2. M20
3. M10
4. M25

Q36.A steel rod of 2 cm diameter and 5 m long is subjected to an axial pull of 3000 kg. If E=2.1×10⁶ kg/cm², the elongation of the rod will be

1. 2.274 cm
2. 0.2274 cm
3. 0.02274 cm
4. 2.02274 cm

Q37.The workability of concrete is influenced most by its

1. water-cement ratio
2. aggregate cement ratio
3. cement content
4. water content

Q38.For a water-cement ratio of 0.60, the amount of water required for one bag of cement is

1. 30 litres
2. 25 litres
3. 20 litres
4. 22 litres

Q39.The most common cause of acidity in water is

1. Carbon dioxide
2. Oxygen
3. Hydrogen
4. Nitrogen

Q40.The purpose of adding Pozzolana in cement is

1. to decrease shrinkage
2. to decrease heat of hydration
3. to increase durability
4. for quick development of final strength

Q41.The safe bearing capacity of a soil weighing 1600 kg/m³ is 16 tonnes per square metre. If the angle of repose is 30°, the depth of the foundation required is

1. 90 cm
2. 110 cm
3. 100 cm
4. 120 cm

Q42.The presence of calcium and magnesium chloride in water causes

1. bad taste
2. turbidity
3. softness
4. hardness

Q43.Crushing strength of a first class brick should not be less than

1. 35 kg/cm²
2. 70 kg/cm²
3. 105 kg/cm²
4. 140 kg/cm²

Q44.The fore bearings of the lines AB and BC are measured as 146°30' and 68°30'. The included angle ABC is recorded as

1. 102°
2. 155°
3. 78°
4. 25°

Q45.Number of bricks required for one cubic metre of brick masonry is

1. 400
2. 450
3. 500
4. 550

Q46.Earnest money is the amount which is required for

1. purchasing a tender
2. starting a contract job
3. submission along with tender
4. None of the above

Q47.The estimated value of a built-up property at the end of its useful life, without being dismantled, is called

1. Scrap value
2. Salvage value
3. Market value
4. Book value

Q48.The total length of a cranked bar bent through a distance (d) at 45° in a beam of effective length (L) is

1. L + 0.42d
2. L − 0.42d
3. L − 2×0.42d
4. L + 2×0.42d

Q49.Sewers should be laid

1. on a sharp curvature
2. with a very stiff gradient
3. on the road level
4. straight from manhole to manhole and below ground

Q50.The maximum efficiency of BOD removal is achieved in

1. Oxidation pond
2. Digestion tank
3. Trickling filter
4. Septic tank

Q51.The cleaning of a slow sand filter is done by

1. passing air through the filter
2. reversing the direction of flow of water
3. scraping off the top layers of sand and admitting water
4. passing a solution of alum and lime through the filter

Q52.The water content in percentage of a fully saturated soil sample having a voids ratio of 0.75 and specific gravity 2.5 will be

1. 0.3%
2. 3%
3. 30%
4. 300%

Q53.Shear strength of soil is determined using

1. Stoke's law
2. Terzaghi's theory
3. Coulomb's law
4. Mohr's theory

Q54.In made-up ground of low bearing power, heavy concentrated structural loads are supported by providing

1. combined footing
2. strap footing
3. raft footing
4. isolated footing

Q55.A soil has a bulk density of 22 kN/m³ and water content of 10%. The dry density of the soil is

1. 18.6 kN/m³
2. 20 kN/m³
3. 22 kN/m³
4. 23.2 kN/m³

Q56.Coefficient of compressibility of soil is the ratio of

1. stress to strain
2. strain to stress
3. stress to settlement
4. rate of loading to that of settlement

Q57.According to IS: 1172-1963, the consumption of water per capita per day for domestic purposes is

1. 85 litres
2. 115 litres
3. 100 litres
4. 135 litres

Q58.The standard Symon's raingauge has a collecting area of diameter

1. 12.7 cm
2. 10 cm
3. 5.05 cm
4. 25.4 cm

Q59.The duty of a crop is 432 hectares/cumec, with a base period of 100 days. The delta for the crop will be

1. 132 cm
2. 200 cm
3. 464 cm
4. 846 cm

Q60.Surface dressing applied to a bituminous pavement is used for

1. wearing course of new bituminous pavement
2. repair of existing wearing course of bituminous pavement
3. seal coat of existing old bituminous pavement
4. seal coat to new bituminous pavement

Q61.Glazing is used to make earthenware

1. hard
2. impervious
3. soft
4. porous

Q62.A waterbound macadam (WBM) road is an example of

1. rigid pavement
2. semi-rigid pavement
3. flexible pavement
4. None of the above

Q63.As per I.R.C., the width of a two-lane carriageway with kerb should be

1. 3.5 m
2. 5.5 m
3. 6.0 m
4. 7.5 m

Q64.An isometric view provides

1. just another elevation detail
2. a two-dimensional detail
3. a three-dimensional detail
4. equal projection line of equal length

Q65.The representative fraction 1/5000 means that the scale is 1 cm equal to

1. 0.5 m
2. 5 m
3. 5 km
4. 50 m

Q66.The ratio of crippling loads of a column having both ends fixed to a column having both ends hinged, is

1. 1
2. 2
3. 3
4. 4

Q67.The top diameter, bottom diameter and height of a slump mould are

1. 10 cm, 20 cm, 30 cm
2. 10 cm, 30 cm, 20 cm
3. 20 cm, 10 cm, 30 cm
4. 20 cm, 30 cm, 10 cm

Q68.Pantagraph is used for

1. measuring distances
2. measuring areas
3. enlarging or reducing plans
4. setting out right angles

Q69.A well is considered to be good if it is sunk into

1. clay
2. sand
3. silt
4. coarse gravel

Q70.It is customary to design a sewer for D.W.F. on the basis of

1. average demand
2. twice the average demand
3. thrice the average demand
4. four times of the average demand

Q71.An ideal flow of a liquid obeys

1. Continuity equation
2. Newton's law of viscosity
3. Newton's 2nd law of motion
4. Dynamic viscosity law

Q72.If the dew point is greater than 0°C,

1. frost will be formed
2. dew will be formed
3. vapours will be formed
4. None of the above

Q73.From a nozzle exposed to atmosphere, the liquid jet traverses

1. a straight line
2. a circular path
3. an elliptical path
4. a parabolic path

Q74.A train moving at 30 kmph is struck by a bullet moving at 500 m/s at right angles to the train. The apparent direction of the bullet's strike is approximately

1. 30°
2. 60°
3. 90°
4. 50°

Q75.The maximum deflection of a simply supported beam of span L, carrying an isolated load W at the centre, flexural rigidity EI, is

1. WL/3EI
2. WL³/8EI
3. WL³/24EI
4. WL³/48EI

Q76.A welded rail joint is generally

1. supported on a sleeper
2. supported on a metal plate
3. suspended
4. All of the above

Q77.Galvanizing means covering iron with a thin coat of

1. tin
2. zinc
3. glaze
4. coal tar

Q78.The maximum percentage chemical ingredient of cement is

1. lime
2. alumina
3. magnesium oxide
4. iron oxide

Q79.Setting time of cement increases by adding

1. gypsum
2. calcium chloride
3. sodium oxide
4. calcium sulphate

Q80.Fluid changes its volume under external pressure due to

1. compressibility
2. viscosity
3. plasticity
4. None of the above

Q81.Alum is chemically

1. copper sulphate
2. aluminium sulphate
3. ferrous sulphate
4. ferric sulphate

Q82.Extra length required for an end anchorage or hook is generally taken as

1. 14Ø
2. 6Ø
3. 24Ø
4. 9Ø

Q83.If the discharge running half-full is 628 lit. per sec, i=0.001 and n=0.010, the diameter of the sewer is

1. 1.39 m
2. 1.49 m
3. 1.59 m
4. 1.69 m

Q84.In a slow sand filter, the turbidity of raw water can be removed only up to

1. 75 mg/lit
2. 150 mg/lit
3. 100 mg/lit
4. 60 mg/lit

Q85.A window which is provided on a sloping roof of a building is called

1. Lantern window
2. Dormer window
3. Louvered window
4. Rash window

Q86.The formula V = (1/n)R^(2/3)S^(1/2), used for determining the velocity of flow in sewers, is known as

1. Chezy's formula
2. Bazin's formula
3. Kutter's formula
4. Manning's formula

Q87.If a paper moistened with lead acetate for five minutes placed in a manhole turns black, the sewer certainly contains

1. Hydrogen sulphide (H2S)
2. Carbon dioxide (CO2)
3. Methane (CH4)
4. None of the above

Q88.The standard BOD of water is taken for

1. 1 day
2. 2 days
3. 3 days
4. 5 days

Q89.Lacquer is

1. oil paint
2. distemper
3. spirit varnish
4. None of the above

Q90.A simply supported beam is subjected to a linearly varying load from one end to the other. The nature of variation of the shear force diagram is

1. linear
2. parabolic
3. elliptic
4. 3rd degree curve

Q91.Distemper consists of

1. colour, cement and water
2. drying agent
3. moisture preventing agent
4. chalk, pigment and water

Q92.I.S. code considers concrete to have reached its limit state of collapse when the strain is

1. 0.0015
2. 0.0020
3. 0.0030
4. 0.0035

Q93.A simply supported beam of size 400mm×600mm is supported on walls 300mm wide, with a clear span of 4m and 20mm diameter reinforcement. As per IS code, the effective span of the beam is

1. 4.6 m
2. 4.4 m
3. 4.3 m
4. None of the above

Q94.Which of the following has high tensile strength?

1. Mild steel
2. Plain hot rolled wires
3. Cold drawn wires
4. Thermo mechanically treated bars

Q95.Which one of the following is not a limit state of serviceability?

1. Vibration
2. Corrosion
3. Loss of stability
4. Fire

Q96.Stoke is the unit of

1. specific volume
2. specific weight
3. dynamic viscosity
4. kinematic viscosity

Q97.The science that considers the forces causing flow of fluids is known as

1. Statics of fluid
2. Dynamics of fluid
3. Kinematics of fluid
4. None of the above

Q98.A solid construction across a river to raise its water level and divert water into a canal, without gates, is known as

1. Dam
2. Weir
3. Bund
4. Barrage

Q99.The portion of the roadway between the outer edges of the carriageway and the drains, in the case of cutting, is known as

1. Kerb
2. Shoulder
3. Formation width
4. Right of way

Q100.For the design of flexible pavement, the Indian Road Congress recommends

1. Triaxial Test method
2. Group Index method
3. Burmister method
4. CBR method