PPSC Past Paper

2025

Sub Engineer Civil

C&W , WASA, GDA , RDA

Dated: 24/02/2025

Multiple Choice Questions

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SUB ENGINEER CIVIL PAST PAPERS

C&W , WASA, GDA , RDA | Sub Engineer Civil | PPSC Exam : 2025

Question 1:

The maximum tolerance in a 20 m chain is

\(\pm\)2 mm \(\pm\)3 mm \(\pm\)5 mm \(\pm\)8 mm

Question 2:

In well-conditioned triangle no angle should be less than

30\(^0\) 45\(^0\) 60\(^0\) 90\(^0\)

Question 3:

For drainage pipes in buildings, the test applied before putting them to use is

Smoke test Water test Straightness test All of the above

Question 4:

The maximum number of steps in a flight should generally be restricted to

10 12 15 No limit

Question 5:

Number of layer of soil adopted in modified proctor test

2 3 4 5

Question 6:

For night landing the colour lights at the threshold is

Blue Green Red White

Question 7:

Most fire resisting stone

Sand stone Granite Lime stone Laterite

Question 8:

The rate of payment is made for 100 cu.m (per % cu.m) in case of

Earth work in excavation Rock cutting Excavation in trenches for foundation All of these

Question 9:

Low turbidity of water is detected by

Turbidity tube Jackson turbidity meter Baylis turbid meter Hellipe turbid meter

Question 10:

Minimum width of landing of stair

1.5 ft 2.0 ft 2.5 ft 3.0 ft

Question 11:

The minimum depth of foundation in clayey soils is

0.5 m 0.7 m 0.9 m 1.2 m

Question 12:

As compared to English bond, double Flemish bond is

Stronger More compact Costly None of the above

Question 13:

Value of deflection angles ranges as:

0 - 360\(^0\) 0 - 180\(^0\) 0 - 90\(^0\) 90\(^0\) - 270\(^0\)

Question 14:

In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as

English bond Double flemish bond Zigzag bond Single flemish bond

Question 15:

What is the minimum crushing strength of a first-class brick in KG/cm²?

70 90 105 120

Question 16:

Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be

0 5 10 15

Question 17:

Determining co-efficient of permeability, constant head permeameter is used for such type of soil

Clay Silt Peat Sand

Question 18:

According to Darcy's law, discharge will be as;

Q = KVa Q = KVi Q = Via Q = kia

Question 19:

The vertical post placed at the top and bottom end of a flight supporting the hand rail is

Newel post Baluster balustrade Railing

Question 20:

Minimum width of landing should be

Equal to width of stairs Half the width of stairs Twice the width of stairs One fourth the width of stairs

Question 21:

Three basic raw materials which are needed in large quantities for production of steel are

Iron ore, coal and sulphur Iron ore, carbon and sulphur Iron ore coal and lime stone Iron ore, carbon and lime stone

Question 22:

Which type of flooring is suitable for use in churches, theatres, public libraries and other places where noiseless floor covering is desired?

Cork flooring Wooden flooring Linoleum flooring Glass flooring

Question 23:

Percentage of carbon content in mild steel is

Less than 0.25 Between 0.25 and 0.7 Between 0.7 and 1.5 Greater than 1.5

Question 24:

Single Flemish bond consists of

Double Flemish bond facing and English bond backing in each course English bond facing and double Flemish bond backing in each course Stretcher bond facing and double Flemish bond backing in each course Double Flemish bond facing and header bond backing in each course

Question 25:

The stretcher bond in brick masonry can be used only when the thickness of wall is

90 mm 180 mm 190 mm 280 mm

Question 26:

Excavation of sewer line is started from the ________ side

Outfall Disposal Starting Point A and B

Question 27:

The nature of sag correction is

Always additive Always subtractive Both a & b None of these

Question 28:

Water supply includes

Collection, transportation and treatment Distribution of water consumers Provision of hydrants for fire fighting All of these

Question 29:

Bearing of two lines are 135° and 45° respectively then the angle subtended will be as

180\(^0\) 90\(^0\) 45\(^0\) 35\(^0\)

Question 30:

Which of the following gradients exerts maximum influence on properties of steel?

Iron Carbon Manganese Sulphur

Question 31:

Measuring, unit of G.I. pipe.

Diameter Weight/m R.m Cu.m

Question 32:

What are the characteristics of an ideal liquid?

Compressible and viscous Incompressible and viscous Compressible and non-viscous Incompressible and non-viscous

Question 33:

it which temperature, is density of water maximum?

0\(^0\)C 100\(^0\)C 50\(^0\)C 4\(^0\)C

Question 34:

The bearing capacity of a water logged soil can be improved by.

Compacting the soil Draining the soil Grouting Increasing the depth of foundation

Question 35:

A pipe provided at a maximum water level in a water storage tank to flow on exceeding the capacity of tank is called

Over flow pipe Vent pipe Blind pipe Washout pipe

Question 36:

The sheet of liquid flowing over a notch

Sheet of liquid Flow of liquid Nappe Discharge

Question 37:

The most economical section of rectangular channel is one which has hydraulic mean depth equal to

b d/2 d/4 d/6

Question 38:

Acidity in water is caused due to

Mineral acids Free CO₂ Aluminium sulphate All the above

Question 40:

In premix asphalt macadam road making method by cold process, the asphalt is heated at this temperature;

100\(^0\) 150\(^0\) 167\(^0\) 177\(^0\)

Question 41:

The vertical distance between the springing line and highest point of the inner curve of an arch is known as

Intrados Rise Spandril Extrados

Question 42:

In case of stable equilibrium metacentre lies at, the position, as compared with Centre of gravity.

Above Coincides Below Anywhere

Question 43:

A structure made to pass drain over canal is called

Aqueduct Super passage Syphon Bridge

Question 44:

most commonly used section in grade aquaduct

Circular Parabolic Rectangle Horse shoe section

Question 45:

For brick construction, the lime-sand mortar, is

1:1 1:2 1:3 1:4

Question 46:

Density of mild steel is taken as Kg/m³.

720 7680 7850 8910

Question 47:

A road sign showing "dead slow" is a such type of road sign

Regulatory Mandatory Warning Informatory

Question 48:

Pitched and sloping roofs are suitable for

Coastal regions Plain regions Covering large areas All of the above

Question 49:

The plinth area of a building not includes

Area of the walls at the floor level Internal shaft for sanitary installations up to 2 sq m. in area Lift and wall including landing Area of cantilevered porch

Question 50:

The measurement is made in square metre in case of

Cement concrete in foundation R.C.C. structure Hollow concrete block wall None of these

Question 51:

Horizontal distance between centroids of the sections of cutting and filling is termed as

Lead Lift Haulage Carriage

Question 52:

For branch sewer connection, minimum slope of house sewer.

2% 4% 6% 8%

Question 53:

The term stringer is used for

The underside of stair Outer projecting edge of a tread A sloping member which support the step in stair None of these

Question 54:

The most important tool in brick laying for lifting and spreading mortar and for forming joints is

Trowel Square Bolster Scutch

Question 55:

The unit of intensity of loudness is

Newton Decibel Meter Cm

Question 56:

Project is handed over to parent department after.

Issuance of completion certificate Inspection Defect liability period Realizing security

Question 57:

A continuous flow of water from one source to other is called,

Run off Water cycle Infiltration Draw down

Question 58:

Dummy activity shown with

Dotted line Cutting plane line Centre line Hidden line

Question 59:

Record of speed of vehicle and time consumed during travelling can be determined in this mode of G.P.S.

Location Mode Menu Mode Map Mode Compass Mode

Question 60:

Intercepting drain is constructed in such direction w.r.t the canal

Parallel Across Inclined Any one

Question 61:

The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is

1 2 3 4

Question 62:

Central portion of the earth is termed as.

Core Mantle Crust Megma

Question 63:

Permanent hardness of water is due to

Chlorides Sulphates Bicarbonates A and B

Question 64:

%age of domestic water in sewage is usually:

99.9 0.9 0.10 0.01

Question 65:

A time period for which a particle of water detains in settling tank is called,

Design period Stop period Detention period Dew time

Question 66:

A surface drain suitable for fluctuating discharge,

Rectangle Circular Semi circular V-shaped

Question 67:

Curve of varying radius is called.

Simple curve Compound curve Transition curve Vertical curve

Question 68:

G.P.S is used to observe,

Magnetic bearing True Bearing Absolute location All of these

Question 69:

A water storage tank constructed on the surface of ground is called _______ water tank.

Under ground reservoir High level reservoir Surface reservoir Over head reservoir

Question 70:

A chemical used for rapid settlement of fine particles is called,

Accelerator Retarder Floculer Coagulant

Question 71:

Type of arch generally constructed over a wooden lintel

Relieving Arch Semi circular Rubble arch Segmental arch

Question 72:

A mortar joint in masonry which is normal to the face of wall is known as

Bed joint Wall joint Cross joint Bonded joint

Question 73:

The rise and fall method doesn't provide check on

Back sights Inter sights Fore sights Reduced level

Question 74:

The rate of an item of work depends on

Specifications of works Specifications of materials Proportion of mortar All the above

Question 75:

A beam of uniform strength has

Same cross-section throughout the beam Same bending stress at every section Same bending moment at every section Same shear stress at every section

Question 76:

Prestressed concrete beams are suitable for bridges having

Heavy loads Longer span Shorter spans A and B

Question 77:

Tie bars in cement concrete pavement are at

Expansion joint Contraction joint Warping joint Longitudinal joint

Question 78:

Cost of fittings and their fixing is specified for the following sanitary fittings

Water closets Flushing pipes Lavatory basins All the above

Question 79:

The asbestos sewer are

Light in weight Not structurally strong to bear large compressive stress Susceptible to corrosion by sulphuric acid All of these

Question 80:

Which of the following methods of offsets involves less measurement on the ground?

Method of perpendicular offsets Method of oblique offsets Method of ties All involve equal measurement on the ground

Question 81:

The site plan illustrates

The floor plan Where the house sits on the property The roof plan Where the gergaes and driveway are located

Question 82:

Resultant pressure "R" at dam is calculated by

P/W P.W \(\sqrt{{P^2}+{W^2}}\) P + W

Question 83:

The property of a liquid which controls its rate of flow;

Surface tension Sp. gravity Viscosity Cohesion

Question 84:

A brick which is half as wide as a full brick

King closer Queen closer Bevelled closer Mitred closer

Question 85:

Study of flowing liquids and forces causing their motion is called

Hydrokinematics hydrodynamics hydraulics Hydrology

Question 86:

In the mid-section formula

The mean depth is the average of depths of two consecutive sections The area of mid-sections is calculated by using mean depth The volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections All of the above

Question 87:

A lap joint is always in ..... Shear

Single Double Both A & B None of these

Question 88:

Which of the following pumps is used to pump sewage solids with liquid sewage without clogging the pump is?

Centrifugal pump Pneumatic ejector Reciprocating pump None of these

Question 89:

The assumption on which the trapezoidal formula for volumes is based, is

The end sections are parallel planes The mid-area of a pyramid is half the average area of the ends The volume of the Prismoidal is over-estimated and hence a Prismoidal correction is applied All the above

Question 90:

Which of the following is not used in measuring perpendicular offset

Line ranger Steel tape Optical square Cross staff

Question 91:

The slenderness ratio is the ratio of

Area of column to least radius of gyration Length of column to least radius of gyration Least radius of gyration to length of column Least radius of gyration to length of column

Question 92:

A section allows the drafter to create a cutting plane line which is not a straight line across the part

Offset Half Whole Broken out

Question 93:

brick walls are measured in sq-m if the thickness of wall is

10 cm 20 cm 30 cm None of these

Question 94:

For hypersonic flow the mach number is

Unity Greater than unity Greater than 2 Greater than 4

Question 95:

For continues flow type of sedimentation tank

Width of a tank is normally kept about 6M Length of tank is normally kept about 4 to 5 times of width Maximum horizontal flow velocity is limited to 0.3M/ minute All of these

Question 96:

For efficient working of a sewer, it must be ensure that

Minimum velocity of 0.5 M/Sec is maintained at its minimum flown Maximum velocity of 0.90 M/Sce is maintained at its maximum flow Both A and B None of these

Question 97:

Coefficient of friction is less when the pavement surface is

Rough Dry Smooth and dry Smooth and wet

Question 98:

The percentage of minimum reinforcement gross cross sectional area of slab is

0.10 0.15 0.20 0.30

Question 99:

To support heavy structure in uneven ground.... are used in foundation

Pile Beam RCC Slab None of these

Question 100:

Height of bathroom not be less than,

2.2 m 3.2 m 4.2 m None of these

DAE

Diploma of Associate Engineer

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INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL

PPSC Sub Engineer Civil Past Paper 24 02 2025 | C&W , WASA, GDA , RDA