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Question Bank

IOCL Southern Region Junior Operator Exam (Civil) - English

Duration: 180 · Questions: 100 · Max Marks: 100 · Language: 3

View IOCL Southern Region Junior Operator 2026 Exam Page

Civil

1
Consider the following statements :
1. There will be no defects in select grade timbers.
2. The codal values for strength of grade-II timer without defects may be reduced by 37.5%.
3. For timber used as columns, the permissible stress in ungraded timbers is adopted with a multiplying factor of 0.50.
4. In case of wind force and earthquakes, a modification factor of 1.33 is adopted. Which of the above statements are correct ? 
  1. A.1 and 3 only
  2. B.1 and 4 only
  3. C.2 and 4 only
  4. D.2 and 3 only
2
Consider the following statements regarding timber :
1. The strength of timber increases by Kiln seasoning.
 2. Cutting of wood is to be done prior to treatment.
3. Water seasoning is good for prevention of warping.
4. ASCU treatment enhances the strength of wood. Which of the above statements are correct ?
  1. A.1, 2 and 3 only
  2. B.2, 3 and 4 only
  3. C.1, 3 and 4 only
  4. D.1, 2, 3 and 4
3
Gase(s) emitted during rotting or decomposition of timber is /are mainly
  1. A.Methane and Hydrogen
  2. B.Hydrogen Sulphide
  3. C.Carbonic acid and Hydrogen
  4. D.Ammonia
4
Efflorescence of bricks is due to
  1. A.Excessive burning of bricks
  2. B.High silt content in brick clay
  3. C.High porosity of bricks
  4. D.Soluble salts present in parent clay
5
Disintegration of bricks masonry walls is primarily due to
1. Efflorescence
2. Magnesium sulphate in brick  
3. Calcined clay admixtures
4. Kankar nodules
Which of the a above statements are correct ? 
  1. A.1, 2 and 3 only
  2. B.1, 2 and 4 only
  3. C.3 and 4 only
  4. D.1, 2, 3 and 4
6
Consider the following test :
1. Transverse strength test
2. Water absorption test
3. Impact test
4. Breaking strength test
Which of the above are relevant to testing of tiles ?
  1. A.1, 2 and 3 only
  2. B.1, 2 and 4 only
  3. C.3 and 4 only
  4. D.1, 2, 3 and 4
7
Which of the following statements is/are correct regarding the strength of cement ?
1. Particle sizes less than 3 m increases the viscous nature of the cement.
2. Finer particles in cement can be replaced by fly-ash to improve the strength.
  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neither 1 nor 2
8
The constituent compound in Portland cement which reacts immediately with water, and also sets earliest, is
  1. A.Tricalcium silicate
  2. B.Dicalcium silicate
  3. C.Tricalcium aluminate
  4. D.Tetracalcium aluminoferrite
9
Which of the following statements are correct with regard to cement mortar ?
1. Workability of cement mortar can be improved by addition of lime.
2. Fly-ash cement is economical in plastering jobs.
3. Addition of saw dust improves workability.
4. Sand in mortar can be replaced by finely crushed fire bricks.
  1. A.1, 2, 3 and 4
  2. B.1, 2 and 3 only
  3. C.3 and 4 only
  4. D.1, 2 and 4 only
10
In a concrete mix of proportion 1 : 3 : 6, the actual quantity of sand, which is judged to have undergone 15% bulking, per unit volume of cement, will be
  1. A.3.00
  2. B.3.45
  3. C.4.50
  4. D.6.00
11
Which method of curing of concrete is recommendable for rapid gain of strength of concrete ?
  1. A.Sprinkling water
  2. B.Membrane curing
  3. C.High-pressure steam curing
  4. D.Infrared radiation curing
12
Which of the following is appropriate as  simple field method for assesing consistency of concrete ?
  1. A.Compacting factor
  2. B.Slump test
  3. C.Vee-Bee test
  4. D.Kelly Ball test
13
Which of the following are relatable to Autoclaved Aerated Concrete ?
1. Light weight
2. Strong
3 Inorganic
4. Nontoxic
  1. A.1, 2 and 3 only
  2. B.1, 2 and 4 only
  3. C.3 and 4 only
  4. D.1, 2, 3 and 4
14
The workability of concrete becomes more reliable depending on
1. Aggregate-cement ratio
2. Time of transit
3. Grading of the aggregate
  1. A.1 only
  2. B.2 only
  3. C.3 only
  4. D.1, 2 and 3
15
Which of the following statements are correct for stresses acting on mutually perpendicular faces of a plane element ?
1. The sum of the normal stresses in mutually perpendicular planes is equal to the sum of the principal stresses.
2. The shearing stresses in two mutually perpendicular planes are equal in magnitude and direction.
3. Maximum shear stress is half of the difference between principal stresses.
  1. A.1, 2 and 3 only
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.1 and 3 only
16
Which of the following statements are correct?
1. Strain in the direction of applied stress is known as longitudinal strain.
2. Tensile stress results in tensile strain in linear and lateral directions.
3. Strains in all directions perpendicular to the applied stress are known as lateral strain. 4. Ratio of change in volume to original volume is known as volumetric strain.
  1. A.1, 2 and 3 only
  2. B.1, 3 and 4 only
  3. C.3 and 4 only
  4. D.1, 2, 3 and 4
17
In the cross-section of a timber, cambium layer can occur in
  1. A.Inner Bark and Sap Wood
  2. B.Pith and Heart Wood
  3. C.Sap Wood and Heart Wood
  4. D.Outer Bark and Sap Wood
18
Consider the following statements :
1. In the infinitesimal strain theory, dilatation is taken as an invariant.
2. Dilatation is not proportional to the algebraic sum of all normal stresses.
3. The shearing modulus is always less than the elastic modulus.
Which of the above statements is/are correct ?
  1. A.1 only
  2. B.1 and 2 only
  3. C.2 only
  4. D.1, 2 and 3
19
Which one of the following represents constitutive relationship ?
  1. A.Vertical displacements in a structure
  2. B.Rotational displacements in a structure
  3. C.System of forces in equilibrium
  4. D.Stress-strain behavior of a material
20
Principal stresses at a point are 80 N/mm2 and 40 N/mm2, both tensile. The yield stress in simple tension for this material is 200 N/mm2. The values of factors of safety according to maximum principal stress theory and maximum shear stress theory, respectively, are
  1. A.2.5 and 2.5
  2. B.2.5 and 5
  3. C.5 and 1.67
  4. D.6 and 2.50
21
The principal stresses at a point are 2  (tensile) and  (compressive), and the stress at elastic limit for the material in simple tension is 210 N/mm2. According to maximum shear strain theory, the value of  at failure is
  1. A.70 N/mm2
  2. B.105 N/mm2
  3. C.140 N/mm2
  4. D.210 N/mm2
22
Which of the following statements are correct ?
1. Cranes are employable in moving and/or hoisting loads.
2. With the use of dipper and stick, power shovels can be used as hoes.
3. Ovedrive for higher speeds is a facility often used comfortably in the working of a tractor.
4. Clam shells are less desirable than draglines if the material is water-saturated.
  1. A.1 and 4 only
  2. B.1 and 2 only
  3. C.2 and 3 only
  4. D.3 and 4 only
23
Two similar bars of Steel and Aluminium are heated to a same temperature. Forces are applied at the ends of the bars to maintain their lengths unaltered. If the  ratio of Young’s moduli of Steel and Aluminium is 3, and the ratio of the coefficients of thermal expansion of Steel to that of aluminium is 0.5, what is the stress on the Aluminium bar if the stress on the Steel bar is 100 MPa ?
  1. A.16.7 MPa
  2. B.66.7 MPa
  3. C.136.7 MPa
  4. D.150.0 MPa
24
A structural steel beam has an unsymmetrical I-cross-section. The overall depth of the beam is 200 mm. The flange stresses at the top and bottom are 120 N/mm2 and 80 N/mm2, respectively. The depth of the natural axis from the top of the beam will be
  1. A.120 mm
  2. B.100 mm
  3. C.80 mm
  4. D.60 mm
25
In the analysis of beams subjected to loads, the point with Nil Bending Moment can be a
1. Point of Contraflexure
2. Point of Maximum Shear Force
3. Point of Inflection
Which of the above statements is/are correct ?
  1. A.1 only
  2. B.2 only
  3. C.3 only
  4. D.1, 2 and 3
26
A tractor has a permissible loaded speed of 200 m/minute, which can increase by 25% when the load is removed/deposited. Generally, it is operated at 80% of the permissible speed (loaded unloaded). It works at a location where haul distance is 120 m. Rest allowance per round-trip is taken as 50 seconds on an average. Fixed time per trip, for loading and unloading and turnaround, etc., is 30 seconds. What is its effective cycle time?
  1. A.157 seconds
  2. B.161 seconds
  3. C.173 seconds
  4. D.182 seconds
27
The purpose of lateral ties in a short RC column is to
  1. A.Avoid buckling of longitudinal bars
  2. B.Facilitate compaction of concrete
  3. C.Increase the load carrying capacity of the column
  4. D.Facilitate construction
28
When a two-hinged parabolic arch is subjected to a rise in ambient temperature, the horizontal thrust at the support will
  1. A.Increase
  2. B.Decrease
  3. C.Remain same
  4. D.Increase or decrease depending on the span
29
In the slope-deflection equations, deformations are considered to be caused by
  1. A.Shear forces and bending moments only
  2. B.Axial forces, shear forces and bending moments
  3. C.Axial forces and bending moments only
  4. D.Bending moments only
30
The maximum bending moment caused by a set of concentrated moving loads is
  1. A.Always at the midpoint of span
  2. B.Between the midpoint and concentrated load next to the midpoint of the span
  3. C.Not definable
  4. D.Always under a load close to the centroid of the set of loads
31
Force method of analysis of a structure is particularly preferred when
1. The degrees of freedom of the structure become large
2. The structure has less number of static, and more number of kinematic, indeterminacies
3. The structure has more numbers of static, and less numbers of kinematic, indeterminacies
  1. A.1 only
  2. B.2 only
  3. C.3 only
  4. D.1, 2 and 3
32
Stiffness matrix method is the category of
1. Compatibility method
2. Displacement method
3. Force method
4. Equilibrium method
  1. A.1 and 3 only
  2. B.1 and 4 only
  3. C.2 and 3 only
  4. D.2 and 4 only
33
Muller-Breslau Principal for obtaining influence lines is applicable to
1. Statically determinate beams and frame
2. Statically indeterminate structures, the material of which is elastic, and follows Hooke’s law.
3. Any statically indeterminate structure
  1. A.1 and 2 only
  2. B.1 only
  3. C.2 only
  4. D.1 and 3 only
34
The plastic neutral axis
1. Divides the given section into two equal halves
2. Divides the given section into two unequal parts
3. Lies on the centroidal axis of the section
  1. A.1 only
  2. B.2 only
  3. C.3 only
  4. D.2 and 3 only
35
The plastic moment capacity MP is
  1. A.Less than the yield moment
  2. B.Equal to the yield moment
  3. C.Greater than the yield moment
  4. D.Dependent on section dimensions
36
Web crippling is caused by
  1. A.Excessive bending moment
  2. B.Failure of web under point loads
  3. C.Width of flanges
  4. D.Column action of web
37
The block shear failure of a bolted joint in tension occurs because of
1. Use of higher shear strength bolts
2. Use of paltes with higher bearing strength
  1. A.1 only
  2. B.2 only
  3. C.Both 1 and 2
  4. D.Neithter 1 nor 2
38
As per IS code, the maximum longitudinal pitch allowed in bolted joints of tension members is nominally
  1. A.12 times the thickness of the plate
  2. B.12 times the diameter of the bolt
  3. C.16 times the thickness of the plate
  4. D.16 times the diameter of the bolt
39
ISMB 100 (rx = 40 mm, ry = 10 mm) has been used as a column in a industrial shed. Along the minor axis, the the column has restraints in the form of purlins at 1.0 m intervals. Effective length factor along major and minor axes are 1.2 and 1.0, respectively. If the slenderness ratio is restricted to 120, the maximum column height will be
  1. A.1.0 m
  2. B.2.4 m
  3. C.4.0 m
  4. D.4.8 m
40
As per IS 800 – 2007, the permitted slenderness ratio for a bracing member in case of hangers shall be
  1. A.140
  2. B.145
  3. C. 150
  4. D.160

English

1
I go to Madurai by —– Vaigai Express
  1. A.a
  2. B.an
  3. C.some
  4. D.the
2
Have the car stolen!
  1. A.Steal the car
  2. B.You should have the stolen car
  3. C.Get someone to steal the car
  4. D.They have stolen the car
3
The payment was collected by the hardworking salesman.
  1. A.The hardworking salesman collected the payment.
  2. B.the salesman who worked heard was able to collect the payment.
  3. C.to collect the payment the salesman had to work hard.
  4. D.The hardworking salesman was able to collect the payment.
4
I had to stop all my work to complete this project.
  1. A.All other work had to be stopped to complete this project by me
  2. B.For completing this project all other work must be stopped
  3. C.For completing this project I had to stop all my work
  4. D.To complete this project all other work had been stopped by me
5
They have published the names of all the successful candidates.
  1. A.The candidates who have succeeded their names they had published.
  2. B.The names of all the successful candidates have been published by them
  3. C.The candidates who have succeeded their names have been published by them.
  4. D.The names of all the successful candidate were published by them. 
6
The online shopping site lowered the prices.
  1. A.Lowering of the prices was done by the online shopping site
  2. B.The prices were lowered by the online shopping site
  3. C.The prices had been lowered by the online shopping site
  4. D.The prices have been lowered by the online shopping site
7
Who taught you to drive a truck ?
  1. A.To drive a truck by whom were you taught?
  2. B.Driving a truck by who were you taught?
  3. C.Driving a truck by who were you being taught?
  4. D.By whom were you taught to drive a truck?
8
We shall invite Suresh.
  1. A.Suresh would be invited by us
  2. B.Suresh would have been invited by us
  3. C.Suresh will be invited by us
  4. D.Suresh will have been invited by us
9
Dark clouds have overcast the evening sky.
  1. A.By the dark clouds the evening sky was overcast.
  2. B.The evening sky has been overcast by the dark clouds.
  3. C.Dark clouds overcastted the evening sky.
  4. D.The sky of the evening was overcasted by dark clouds.
10
The partners will celebrate their triumph tomorrow. 
  1. A.The triumph would be celebrated by the partners a day before
  2. B.The triumph would be celebrated by the partners a day after
  3. C.The triumph would have been celebrated by the partners a day after
  4. D.The triumph will have been celebrated by the partners tomorrow
11
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
  1. A. presented , stay
  2. B.introduced , keep
  3. C.announce , make
  4. D.created , let
  5. E.proclaimed , hold
12
Assets
  1. A.liabilities
  2. B.responsibilities
  3. C.estates
  4. D.profits
13
Affidavit
  1. A. Affirmation
  2. B.Slander
  3. C.Oath
  4. D.Testimony
14
Hollow
  1. A.Alveolate
  2. B.Cleft
  3. C. Cavernous
  4. D.Solid
15
Cosset 
  1. A.Ignoreb
  2. B.Close
  3. C.Caress
  4. D.Fondle
16
Ogle
  1. A.Leer
  2. B.Gaze
  3. C.Ignore
  4. D.Gawk
17
Intrinsic
  1. A.Elemental
  2. B.Innate
  3. C.Connate
  4. D.Acquired
18
Coalesce
  1. A.Separate
  2. B.Adhere
  3. C.Cleave
  4. D.Amalgamate
19
Loiter
  1. A.lag 
  2. B.Hasten
  3. C.Amble
  4. D.Loii
20
The protests were......... at ......... awareness among the elite and the educated.
  1. A.held, generating
  2. B.aimed, creating
  3. C.targeted, awakening
  4. D.focused, building
  5. E.concentrated, producing

Reasoning

1
‘Gram’ is relatd to ‘Mass’ in the same way as ‘Centimetre’ is related to
  1. A.Area
  2. B.Volume
  3. C.Length
  4. D.Sound
  5. E.Energy
2
'Mustard' is related to 'Seed' in the same way as 'Carrot' is related to
  1. A.Fruit
  2. B.Stem
  3. C.Flower
  4. D.Root
  5. E.None of these
3
Which of the following pairs of words have the same relationship as Fan : Heat?
  1. A.Water        :           Drink
  2. B.Light         :        Night
  3. C.Teach       :      Student
  4. D.Air             :        Breathe
  5. E.Food         :        Hunger
4
'Radish' is related to 'Root', in the same way as 'Brinjal' is related to
  1. A.Fruit
  2. B.Stem
  3. C.Flower
  4. D.Root
  5. E.None of these
5
'Jackal' is related to 'Carnivorous', in the same way as 'Goat' is related to
  1. A.Omnivorous
  2. B.Carnivorous
  3. C.Herbivorous
  4. D.Multivorous
  5. E.None of these
6
Which of the following pairs has similar relationship as Run : Race?
  1. A.Party : Dance
  2. B.Study : Book
  3. C.Lecture : Study
  4. D.Enjoy : Journey
  5. E.None of these
7
Which of the following has same relationship as that of Money : Wealth?
  1. A.Pity : Kindness
  2. B.Cruel : Anger
  3. C.Wise : Education
  4. D.Pride : Humility
  5. E.None of these
8
Which of the following is related to ‘Melody’, in the same way as ‘Delicious’ is related to 'Taste'?
  1. A.Memory
  2. B.Highness
  3. C.Tongue
  4. D.Speak
  5. E.Voice
9
Offhand’ is related to ‘Premeditation’ in the same way as ‘Above board’ is related to
  1. A.Integrity
  2. B.Honesty
  3. C.Guide
  4. D.Competition
  5. E.None of these
10
5 : 7 : : ? : 28
  1. A.20
  2. B.14
  3. C.56
  4. D.26
  5. E.None of these
11
Given Set : (6, 15, 28)
  1. A.(50,59,71)
  2. B.(46, 56, 66)
  3. C.(60, 69, 72)
  4. D.(60, 69, 82)
  5. E.None of these
12
Given Set : (81, 77, 69)
  1. A.(56, 52, 44)
  2. B.(64, 61, 53)
  3. C.(92, 88, 79)
  4. D.(75, 71, 60)
  5. E.None of these
13
Kick : Football
  1. A.Mop : Sweep
  2. B.Dust : Rage
  3. C.Wash : Dishes
  4. D.Throw : Ring
  5. E.None of these
14
Rectangle : Pentagon
  1. A.Triangle : Rectangle
  2. B.Diagonal : Perimeter
  3. C.Side : Angle
  4. D.Circle : Square
  5. E.None of the above
15
Inherit : Acquire
  1. A.Instinct : Habbit
  2. B.Learn : Discover
  3. C.Loss : Gain
  4. D.Hierarchical : Succession
  5. E.None of the above
16
Court : Justic
  1. A.Police : Crime
  2. B.Teacher : Study
  3. C.Doctor : Sickness
  4. D.Auditor : Accuracy
  5. E.None of these
17
Coal : Thermal
  1. A.Power : Energy
  2. B.Bulb : Light
  3. C.Air : Atmosphere
  4. D.Water : Hydel
  5. E.None of the above
18
Statements I=H>C> N < E=S
Conclusions
I. I > H
II. C > S
  1. A.Neither conclusion I nor conclusion II is true
  2. B.Either conclusion I or II is true
  3. C.Only conclusion II is true
  4. D.Only conclusion I is true
  5. E.Both conclusions I and II are true
19
Statements G> R>E=A<T<S:D<A<J
Conclusions
I. T  D
II. R > S
  1. A.Only conclusion II is true
  2. B.Only conclusion I is true
  3. C.Both conclusions I and II are true
  4. D.Either conclusion I or II is true
  5. E.Neither conclusion I nor II is true
20
Statements G>R> E=A<T<S:D<A<J
Conclusions 
I J > G
II. J = G
  1. A.Only conclusion II is true
  2. B.Only conclusion I is true
  3. C.Both conclusions I and II are true
  4. D.Either conclusion I or II is true
  5. E.Neither conclusion I nor II is true

mathematics

1
If A exceeds B by 40%, B is less than C by 20%, then A C is,:
  1. A.28 : 25
  2. B.26 : 25
  3. C.3 : 2
  4. D.3 : 1
2
What is the sum of 130+125+191 ?
  1. A.335
  2. B.456
  3. C.446
  4. D.426
3
If , then x is equal to
  1. A.5   
  2. B.3
  3. C.2
  4. D.4
4
A sum of money doubles itself at compound interest in 15 years. In how many years it will become eight times ?
  1. A.30
  2. B.45
  3. C.50
  4. D.60
5
Compound interest (compounded annually) on a certain sum of money for 2 years at 4% per annum is Rs. 102. The simple interest on the same sum for the same rate and for the same period will be
  1. A.Rs. 99
  2. B.Rs. 101
  3. C.Rs. 100
  4. D.Rs. 98
6
There are 5 red balls, 4 yellow balls and 3 green balls in a basket. If 3 ball are drawn at random. What is the probability that at least 2 of them are green in colour?
    7
    Which of the following fractions is in descending order ?
      8
      The value of 
      1. A.9 
      2. B.7
      3. C.11
      9
      The square root of  is
        10
        If (1101)2 = 1212201 find the value at 
        1. A.110.1
        2. B.11.01
        3. C.1.101
        4. D.11.001
        11
        A discount of 15% on one article is the same as discount of 20% on a second article. The costs of the two articles can be
        1. A.Rs. 85, Rs. 60
        2. B.Rs. 60, Rs. 40
        3. C.Rs. 40, Rs. 20
        4. D.Rs. 80, Rs. 60
        12
        is equal to 
        1. A.-2 
        2. B.2
        3. C.0
        4. D.1
        13
        Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different.
        1. A.28 : 163
        2. B.16 : 91
        3. C.27 : 82
        4. D.22 : 127
        14
        The simplified value of  is  
        1. A.0.075  
        2. B.0.705
        3. C.0.750
        4. D.7.500
        15
        The digit in unit's place of the number
        (1570)2 + (1571)2 + (1572)2 + (1573)2 is 
        1. A.4  
        2. B.1
        3. C.2
        4. D.3
        16
        Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
        MEND, PHJZ, SKFV, VNBR, ?
        1. A.YJYN
        2. B.YQXN
        3. C.YRXO
        4. D.YQZM
        17
        Select the option in which the numbers are related in the same way as are the numbers of the following set.
        (12, 14, 143)
        1. A.(12, 18, 246)
        2. B.(17, 12, 134)
        3. C.(16, 10, 235)
        4. D.(15, 19, 252)
        18
         =?
        1. A.4 
        2. B.6
        3. C.8
        4. D.10
        19
        Select the option in which the numbers are NOT related in the same way as are the numbers of the following set.
        (64, 91, 118)
        1. A.(46, 73, 101)
        2. B.(48, 75, 102)
        3. C.(72, 99, 126)
        4. D.(55, 82, 109)
        20
         is equal to
        1. A.12.0
        2. B.11.5
        3. C.11.0 
        4. D.10.5 
        Question for IOCL Southern Region Junior Operator 2026 - Quiz / Questions / MCQ - Toppersexam