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Latest BTSC Laboratory Assistant Exam Question (Objective Questions), MCQ in English

Subjects : TechnicaTechnical Subject (Civil)l Subject (Civil), Technical Subject (Civil)

Question Bank BTSC Laboratory Assistant (Civil) Exam - English
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Technical Subject (Civil)

Question 1Single Answer
A water supply distribution system for an averagely-populated township is to be designed for
  1. A
    Maximum daily demand 
  2. B
    Maximum hourly demand and fire demand 
  3. C
    Average demand 
  4. D
    Maximum daily demand and fire demand or maximum hourly demand, whichever is higher
Question 2Single Answer
 A combined sewerage system is more appropriate for developed areas where
  1. A
    Rainfall occurs for a very few days in a year 
  2. B
    Rainfall occurs almost uniformly throughout the year 
  3. C
    Air temperatures are nearly uniform throughout the year 
  4. D
    Air temperatures through the year include extremes during certain runs of days 
Question 3Single Answer
100 m3 of sludge holds a moisture content of 95%. If its moisture content chagnes to 90%, the volume of this sludge will then be
  1. A
    40.5m3
  2. B
    50m3
  3. C
    75m3
  4. D
    94.7m3
Question 4Single Answer
The design overflow rate of a sedimentation tank is chosen considering
  1. A
    Flow rate through the tank 
  2. B
    Diameter of the particle intended to be removed 
  3. C
    Volume of the sedimentation tank 
  4. D
    Detention time in the tank
Question 5Single Answer
Consider the following statements in respect of flow equalization in a waste water treatment plant : 
1. Biological treatment is enhanced because shock loadings are eliminated or minimized
2. Flow equalizations is an attractive option for upgrading the performance of overloaded treatment plants.
3. Inhibiting substances can be diluted and pH can be stabilized
4. Thickening performance of primary sedimentation tanks following grit removal is improved.
 Which of the above statements are correct? 
  1. A
    1, 2, 3 and 4 
  2. B
    1, 2 and 3 only 
  3. C
    1, 2 and 4 only 
  4. D
    3 and 4 only   
Question 6Single Answer
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
Question 7Single Answer
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
Question 8Single Answer
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
Question 9Single Answer
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
Question 10Single Answer
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
Question 11Single Answer
One bag of Portland cement, 50 kg in weight, would normally have a bulk volume of
  1. A
    30 l 
  2. B
    35 l
  3. C
    40 l
  4. D
    45 l
Question 12Single Answer
AsCu, a preservative for wood, developed by the Forest Research Institute, Dehradun, comprises of chemicals:
  1. A
    1 : 1 : 1
  2. B
    1 : 2 : 3
  3. C
    1 : 2 : 4
  4. D
    1 : 3 : 4
Question 13Single Answer
Consider the following statements related to autoclave bricks:
1.Less water absorption compared to other bricks.
2.Noise reduction
3.It is cheap compared to other types of bricks.
4.Requirement of bulk volume of mortar in joints being relatively less compared to other types of brick masonry.
5.Not recommended for outer walls. 
Which of the above statements are relevant to the use of ‘autoclave’ bricks? 
  1. A
    1, 2 and 4
  2. B
    1, 3 and 5
  3. C
    2, 3 and 4
  4. D
    2, 4 and 5
Question 14Single Answer
The minimum number of annular rings to be seen in every 2.54 cm in the radial direction from the core for timber to be classified as ‘Dense’ is
  1. A
    10
  2. B
    20
  3. C
    25
  4. D
    30
Question 15Single Answer
If the actual thickness of a brick masonry wall is 19 cm, its effective length is 2.70 m, its effective height is 2.82 m and its code specified stiffening coefficient is 1.2 then, for design considerations, the slenderness ratio of the wall will be taken as
  1. A
    11.8
  2. B
    12.4
  3. C
    14.2 
  4. D
    14.8
Question 16Single Answer
What will be the depth of penetration of the plunger in Vicat Apparatus (IS : 5513 - 1976) from the bottom of the Vicat Mould, when the cement paste is tested for standard consistency, according to IS 4031 – 1988 ?
  1. A
    11 to 15 mm
  2. B
    8 to 10 mm
  3. C
    15 to 17 mm
  4. D
    5 to 7 mm
Question 17Single Answer
Two sewer pipelines A and B (having the same diameter and made of the same material) are laid at a bed slope of 1 in 225 and 1 in 625, respectively. Determine the ratio of their carrying capacities (QA to QB) .
  1. A
  2. B
  3. C
    1
  4. D
Question 18Single Answer
Select the correct statement with respect to an over - reinforced cement concrete section under the working stress method .
  1. A
    The compressive stress in steel reaches the allowable limit before the maximum tensile stress in concrete reaches the allowable limit
  2. B
    Tensile steel stress and maximum compressive stress in concrete simultaneously reach their allowable limits
  3. C
    The allowable limiting stress is reached in concrete before the steel stress reaches the limiting value
  4. D
    The tensile stress in steel reaches the allowable limit before the maximum compressive stress in concrete reaches the allowable limit
Question 19Single Answer
A cantilever beam of span L is built - in at the support. It is restrained against lateral deflection and torsion at the free end. The effective length of compression flange for the beam as per IS 800 : 2007 is
  1. A
    0.5 L
  2. B
    0.85 L
  3. C
    2 L
  4. D
    0.75 L
Question 20Single Answer
What is the principle of plane surveying ?
  1. A
    Working from part to whole
  2. B
    Working from point to area
  3. C
    Working from angle to volume
  4. D
    Working from whole to part
Question 21Single Answer
What is the primary focus of kinematics in dynamics?
  1. A
    Forces causing motion
  2. B
    Motion without forces
  3. C
    Energy conservation
  4. D
    Momentum transfer
Question 22Single Answer
What is the primary purpose of evaluating bearing capacity in foundation design?
  1. A
    Ensure soil can support loads without failure
  2. B
    Minimize construction cost
  3. C
    Increase settlement
  4. D
    Enhance aesthetic appeal
Question 23Single Answer
Which bearing capacity theory is commonly used for shallow foundations?
  1. A
    Terzaghi’s theory
  2. B
    Rankine’s theory
  3. C
    Coulomb’s theory
  4. D
    Taylor’s theory
Question 24Single Answer
What field test is commonly used to estimate bearing capacity?
  1. A
    Standard Penetration Test (SPT)
  2. B
    Proctor test
  3. C
    Consolidation test
  4. D
    Triaxial test
Question 25Single Answer
What is the factor of safety for allowable bearing capacity?
  1. A
    2.5 to 3
  2. B
    1.5 to 2
  3. C
    4 to 5
  4. D
    1 to 1.5
Question 26Single Answer
What is immediate settlement in foundation design?
  1. A
    Elastic settlement occurring instantly
  2. B
    Settlement due to consolidation
  3. C
    Settlement due to shear failure
  4. D
    Settlement due to compaction
Question 27Single Answer
What is the allowable settlement for isolated footings on clay?
  1. A
    75 mm
  2. B
    50 mm
  3. C
    25 mm
  4. D
    100 mm
Question 28Single Answer
What is the allowable settlement for isolated footings on sand?
  1. A
    50 mm
  2. B
    75 mm
  3. C
    25 mm
  4. D
    100 mm
Question 29Single Answer
What is the primary purpose of proportioning shallow foundations?
  1. A
    Ensure uniform load distribution and stability
  2. B
    Minimize material usage
  3. C
    Increase settlement
  4. D
    Enhance aesthetic appeal
Question 30Single Answer
What is an isolated footing used for?
  1. A
    Support single column loads
  2. B
    Support multiple columns
  3. C
    Distribute load over large area
  4. D
    Support bridge piers
Question 31Single Answer
What is a combined footing used for?
  1. A
    Support two or more closely spaced columns
  2. B
    Support single column
  3. C
    Distribute load over weak soil
  4. D
    Support machine loads
Question 32Single Answer
What is a raft foundation used for?
  1. A
    Distribute load over large area in weak soils
  2. B
    Support single column
  3. C
    Minimize construction cost
  4. D
    Support deep foundations
Question 33Single Answer
What is a common type of pile foundation?
  1. A
    Driven precast pile
  2. B
    Spread footing
  3. C
    Strip footing
  4. D
    Mat foundation
Question 34Single Answer
What is the primary function of a pile foundation?
  1. A
    Transfer load to deeper, stronger soil
  2. B
    Distribute load over surface soil
  3. C
    Reduce settlement in firm soil
  4. D
    Increase soil permeability
Question 35Single Answer
What is the static formula for pile capacity based on?
  1. A
    Skin friction and end bearing
  2. B
    Soil permeability
  3. C
    Consolidation settlement
  4. D
    Shear strength only
Question 36Single Answer
What is a common dynamic formula for pile capacity?
  1. A
    Engineering News formula
  2. B
    Terzaghi’s formula
  3. C
    Meyerhof’s formula
  4. D
    Skempton’s formula
Question 37Single Answer
What is the formula for pile capacity using the Engineering News formula?
  1. A
    Q_u = (W h) / (s + C)
  2. B
    Q_u = (W h) / s
  3. C
    Q_u = (W h) / C
  4. D
    Q_u = (W h) / (s - C)
Question 38Single Answer
What is the primary consideration in pile group design?
  1. A
    Group efficiency and settlement
  2. B
    Individual pile capacity only
  3. C
    Soil permeability
  4. D
    Construction cost
Question 39Single Answer
What is the efficiency of a pile group?
  1. A
    Ratio of group capacity to sum of individual capacities
  2. B
    Ratio of individual capacity to group capacity
  3. C
    Ratio of settlement to load
  4. D
    Ratio of skin friction to end bearing
Question 40Single Answer
What is the purpose of a pile load test?
  1. A
    Verify pile capacity and settlement
  2. B
    Measure soil permeability
  3. C
    Calculate consolidation
  4. D
    Assess slope stability
Question 41Single Answer
What is the maximum test load in a pile load test as per IS 2911?
  1. A
    2.5 times design load
  2. B
    1.5 times design load
  3. C
    3 times design load
  4. D
    1 times design load
Question 42Single Answer
What is the settlement of a pile group primarily caused by?
  1. A
    Compression of soil below pile tips
  2. B
    Elastic deformation of piles
  3. C
    Shear failure of piles
  4. D
    Compaction of soil
Question 43Single Answer
What is the primary method for analyzing piles under lateral loads?
  1. A
    P-y curve method
  2. B
    Terzaghi’s method
  3. C
    Boussinesq’s method
  4. D
    Newmark’s method
Question 44Single Answer
What is a key consideration for pile foundations in bridge design?
  1. A
    Scour depth and lateral stability
  2. B
    Soil permeability only
  3. C
    Consolidation settlement
  4. D
    Construction cost only
Question 45Single Answer
What is the purpose of ground improvement techniques?
  1. A
    Enhance soil strength and reduce settlement
  2. B
    Increase soil permeability
  3. C
    Reduce soil density
  4. D
    Increase construction cost
Question 46Single Answer
What is a sand drain used for?
  1. A
    Accelerate consolidation in soft soils
  2. B
    Increase soil permeability
  3. C
    Reduce shear strength
  4. D
    Stabilize slopes
Question 47Single Answer
What is a stone column used for?
  1. A
    Improve bearing capacity and reduce settlement
  2. B
    Increase soil permeability only
  3. C
    Reduce soil density
  4. D
    Enhance aesthetic appeal
Question 48Single Answer
What is grouting in ground improvement?
  1. A
    Injecting cementitious material to fill voids
  2. B
    Compacting soil with rollers
  3. C
    Installing sand drains
  4. D
    Adding geotextiles
Question 49Single Answer
What is a common soil stabilization method?
  1. A
    Lime stabilization
  2. B
    Sand replacement
  3. C
    Water flooding
  4. D
    Air drying
Question 50Single Answer
What is the primary function of geotextiles in ground improvement?
  1. A
    Separation, filtration, and reinforcement
  2. B
    Increase soil permeability
  3. C
    Reduce soil strength
  4. D
    Enhance aesthetic appeal
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