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Home » Engineering » Civil Engineering » Aptitude Test - 14
1. The alkaline salt present in the bricks, absorbs moisture from the air which on drying
A. leaves pores and makes the bricks porous
B. leaves high powder deposit on the brick
C. makes the bricks brittle and weak
D. leaves pores and makes the bricks porous
2.The size of mould for bricks should be
A. equal to
B. smaller than
C. Larger than
D. equal to
3. Efflorescence is caused if
A. the alkaline salt is present in the bricks
B. the clay used for making bricks contain pyrite
C. the water used for pugging the clay contains gypsum
D. the alkaline salt is present in the bricks
4. For shear strength, triaxial shear test is suitable because
A. It can be performed under all three drainage conditions
B. Precise measurement of the pore pressure and volume change during the test is possible
C. Stress distribution on the failure plane, is uniform
D. It can be performed under all three drainage conditions
5. The zero atmospheric pressure is at
A. Sea level
B. Water table
C. Phreatic surface
D. Sea level
6. Terzaghi's bearing capacity factors Nc, Nq and Nr are functions of
A. Cohesion only
B. Angle of internal friction only
C. Both cohesion and angle of internal friction
D. Cohesion only
7.Both cohesion and angle of internal friction
A. Water
B. Glacier
C. Wind
D. Water
8.Rise of water table in cohesion-less soils upto ground surface reduces the net ultimate bearing capacity approximately by
A. 25 %
B. 50 %
C. 75 %
D. 25 %
9.A decrease in water content results in a reduction of the volume of a soil in
A. Liquid state
B. Plastic state
C. Semi solid state
D. Liquid state
10. Through a point in a loaded soil, the principal stress is maximum on
A. Minor principal plane
B. Intermediate principal plane
C. Major principal plane
D. Minor principal plane
11. If the sand in-situ is in its densest state, then the relative density of sand is
A. Zero
B. 1
C. Between 0 and 1
D. Zero
12. The property of a soil which permits water to percolate through it, is called
A. Moisture content
B. Permeability
C. Capillarity
D. Moisture content
13. Toughness index is defined as the ratio of
A. Plasticity index to consistency index
B. Plasticity index to flow index
C. Liquidity index to flow index
D. Plasticity index to consistency index
14. Shear strength of a soil is a unique function of
A. Effective stress only
B. Total stress only
C. Both effective stress and total stress
D. Effective stress only
15.The method of the slices is applicable to
A. Homogenous soils
B. Stratified soils
C. Saturated soils
D. Homogenous soils
16.The angle that Coulomb's failure envelope makes with the horizontal is called
A. Cohesion
B. Angle of internal friction
C. Angle of repose
D. Cohesion
17.A flow net may be utilised for the determination of
A. Exit gradient
B. Seepage
C. Hydrostatic pressure
D. Exit gradient
18.The compression index of a soil
A. Decreases with an increase in the liquid limit
B. Increases with an increase in the liquid limit
C. Decreases with an increase in the plastic limit
D. Decreases with an increase in the liquid limit
19. Sensitivity of a soil can be defined as
A. Percentage of volume change of soil under saturated condition
B. Ratio of compressive strength of unconfined undisturbed soil to that of soil in a remoulded state
C. Ratio of volume of voids to volume of solids
D. Percentage of volume change of soil under saturated condition
20. The soil moisture driven off by heat, is called
A. Free water
B. Hydroscopic water
C. Gravity water
D. Free water
21. Plasticity index is defined as the range of water content between
A. Liquid and plastic limit
B. Plastic limit and semi solid limit
C. Semi-solid limit and liquid limit
D. Liquid and plastic limit
22.Bishop's method of stability analysis
A. Is more conservative
B. Neglects the effect of forces acting on the sides of the slices
C. Assumes the slip surface as an arc of a circle
D. Is more conservative
23. You are given a sample of soil containing coarse grains to determine its water content, you will use
A. Pycnometer
B. Oven-drying method
C. Calcium carbide method
D. Pycnometer
24.During seepage through a soil, direction of seepage is always
A. Parallel to equipotential lines
B. Perpendicular to stream lines
C. Perpendicular to equipotential lines
D. Parallel to equipotential lines
25.The seepage force in a soil, is
A. Perpendicular to the equipotential lines
B. Proportional to the exit gradient
C. Proportional to the head loss
D. Perpendicular to the equipotential lines
26.The polluted water is one which
A. Contains pathogenic bacteria
B. Consists of undesirable substances rendering it unfit for drinking and domestic use
C. Is safe and suitable for drinking and domestic use
D. Contains pathogenic bacteria
27.Orthotolidine test is used for determination of
A. Dissolved oxygen
B. Residual chlorine
C. Biochemical oxygen demand
D. Dissolved oxygen
28.The chemical most commonly used to increase speed of sedimentation of sewage is
A. Sulphuric acid
B. Copper sulphate
C. Lime
D. Sulphuric acid
29. The disinfection efficiency of chlorine increases by
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. Only (i)
30.The layout of distribution system in which water flows towards the outer periphery is
A. Ring system
B. Dead end system
C. Radial system
D. Ring system
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