civil engineering Mcqs
3751. Dispersed type of soil structure is an arrangement comprising particles having______________?
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A. face to face or parallel orientation

B. edge to face orientation

C. edge to edge orientation

D. all of the above

3752. The water content of soil, which represents the boundary between plastic state and liquid state, is known as_________________?
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A. liquid limit

B. shrinkage limit

C. plastic limit

D. plasticity index

3753. Within the consolidation process of a saturated clay__________________?
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A. a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant

B. a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant

C. both neutral pressure and effective pressure decrease

D. both neutral pressure and effective pressure increase

3754. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear________________?
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A. increases

B. decreases

C. first increases and then decreases

D. remains unchanged

3755. Rankines theory of earth pressure assumes that the back of the wall is_______________?
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A. plane and smooth

B. vertical and rough

C. plane and rough

D. vertical and smooth
3756. The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in_____________?
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A. the method of taking observations

B. the principle of test

C. the method of preparation of soil suspension

D. all of the above

3757. Select the incorrect statement?
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A. Bearing capacity of a soil depends on the type of soil

B. Bearing capacity of a soil depends upon the amount and direction of load

C. Bearing capacity of a soil is indepen-dent of rate of loading

D. Bearing capacity of a soil depends upon shape and size of footing

3758. In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as__________________?
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A. unconsolidated drained test

B. consolidated undrained test

C. unconsolidated undrained test

D. consolidated drained test

3759. The flownet for an earthen dam with 30 m water depth consists of 25 potential drops and 5 flow channels. The coefficient of permeability of dam material is 0.03 mm/sec. The discharge per meter length of dam is________________?
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A. 0.0045 m3/sec

B. 0.1125m3/sec

C. 0.00018 nrVsec

D. 0.18m3/sec

3760. Select the correct statement?
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A. Unit weight does not affect per-meability

B. The greater the unit weight, the greater is permeability

C. The greater the unit weight, the smaller is permeability

D. The greater the viscosity, the greater is permeability

3761. A 600 mm square bearing plate settles by 15 mm in plate load test on a cohesionless soil under an intensity of loading of 0.2 N/ram2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is_______________?
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A. 25 mm

B. between 15 mm and 25 mm

C. 15 mm

D. greater than 25 mm

3762. If the plasticity index of a soil mass is zero, the soil is______________?
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A. clay

B. silt

C. clayey silt

D. sand
3763. The shear strength of a soil_________________?
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A. is inversely proportional to the angle of internal friction of the soil

B. decreases with decrease in normal stress

C. decreases with increase in normal stress

D. is directly proportional to the angle of internal friction of the soil

3764. Coefficient of compressibility is_______________?
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A. different for different types of soils but same for a soil under different states of consolidation

B. constant for any type of soil

C. different for different types of soils and also different for a soil under different states of consolidation

D. independent of type of soil but depends on the stress history of soil

3765. The ratio of volume of voids to the total volume of soil mass is called______________?
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A. porosity

B. air content

C. percentage air voids

D. voids ratio

3766. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is__________________?
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A. 22.5

B. 90

C. 45

D. 0

3767. During the first stage of triaxial test when the cell pressure is increased from 0.10 N/mm2 to 0.26 N/mm2, the pore water pressure increases from 0.07 N/mm2 to 0.15 N/mm2. Skemptons pore pressure parameter B is___________________?
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A. -0.5

B. 2.0

C. 0.5

D. 2

3768. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on__________________?
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A. horizontal plane only

B. vertical plane only

C. both horizontal and vertical planes

D. all planes except horizontal and vertical planes
3769. Coefficient of consolidation of a soil is affected by_______________?
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A. compressibility

B. permeability

C. both compressibility and permeability

D. none of the above

3770. Inorganic soils with low compressibility are represented by_________________?
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A. CH

B. SL

C. ML

D. MH

3771. Select the correct statement?
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A. coefficient of compressibility of an over-consolidated clay is greater than that of a normally consolidated clay

B. coefficient of compressibility is cons-tant for any clay

C. coefficient of compressibility of an over-consolidated clay is less than that of a normally consolidated clay

D. none of the above

3772. The admixture of coarser particles like sand or silt to clay causes______________?
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A. decrease in liquid limit and increase in plasticity index

B. decrease in liquid limit and no change in plasticity index

C. decrease in both liquid limit and plasticity index

D. increase in both liquid limit and plasticity index

3773. Select the incorrect statement ?
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A. In a direct shear box test, the plane of shear failure is predetermined

B. Stress distribution on the failure plane in the case of triaxial compression test is uniform

C. Unconfined compression test can be carried out on all types of soils

D. Better control is achieved on the drainage of the soil in a triaxial compression test

3774. If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is______________?
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A. 80%

B. 100%

C. 60%

D. 40%
3775. The most suitable method for drainage of fine grained cohesive soils is________________?
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A. deep well system

B. electroosmosis method

C. vacuum method

D. well ppint system

3776. According to IS classification, the range of silt size particles is_________________?
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A. 4.75 mm to 2.00 mm

B. 0.425 mm to 0.075 mm

C. 2.00 mm to 0.425 mm

D. 0.075 mm to 0.002 mm
3777. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are________________?
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A. 1.0 and 0.5

B. 0.0 and 1.0

C. 0.5 and 1.0

D. 1.0 and 0.0

3778. Which of the following statements is correct ?
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A. Uniformity coefficient represents the shape of the particle size distribution curve

B. For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity

C. A soil is said to be well graded if it has most of the particles of about the same size

D. none of the above
3779. Valid range for n, the percentage voids, is______________?
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A. n<0

B. 0<n0

C. 0
3780. The ultimate consolidation settlement of a structure resting on a soil_______________?
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A. decreases with the increase in the initial voids ratio

B. increases with the decrease in the porosity of the soil

C. decreases with the decrease in the plastic limit

D. increases with the increase in the initial voids ratio

3781. In hydrometer analysis for a soil mass______________?
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A. both meniscus correction and dispersing agent correction are additive

B. both meniscus correction and dispersing agent correction are subtractive

C. meniscus correction is additive and dispersing agent correction is subtractive

D. meniscus correction is subtractive and dispersing agent correction is additive

3782. Residual soils are formed by______________?
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A. none of the above

B. water

C. glaciers

D. wind

3783. The maximum dry density upto which any soil can be compacted depends upon____________?
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A. moisture content only

B. amount of compaction energy only

C. both moisture content and amount of compaction energy

D. none of the above

3784. The clay mineral with the largest swelling and shrinkage characteristics is_______________?
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A. none of the above

B. montmorillonite

C. kaolinite

D. illite

3785. The effect of cohesion on a soil is to______________?
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A. reduce both the active earth pressure intensity and passive earth pressure intensity

B. increase both the active earth pressure intensity and passive earth pressure intensity

C. reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity

D. increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity

3786. Coefficient of consolidation for clays normally_______________?
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A. first increases and then decreases with increase in liquid limit

B. increases with increase in liquid limit

C. decreases with increase in liquid limit

D. remains constant at all liquid limits

3787. Direct measurement of permeability of the specimen at any stage of loading can be made_______________?
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A. only in fixed ring type consolido-meter

B. only in floating ring type consolido-meter

C. both (A) and (B)

D. none of the above

3788. Voids ratio of a soil mass can_________________?
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A. take any value greater than zero

B. be zero

C. never be greater than unity

D. take values between 0 and 1 only

3789. Constant head permeameter is used to test permeability of_______________?
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A. coarse sand

B. fine sand

C. clay

D. silt

3790. Relative density of a compacted dense sand is approximately equal to_____________?
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A. 0.6

B. 1.2

C. 0.4

D. 0.95
3791. If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in______________?
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A. semi-solid state

B. liquid state

C. plastic state

D. solid state

3792. If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then______________?
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A. the liquid limit of soil always increases

B. the liquid limit of soil always decreases

C. the liquid limit of soil may decrease

D. the liquid limit of soil may increase

3793. Which of the following methods is more suitable for the determination of permeability of clayey soil ?
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A. horizontal permeability test

B. falling head method

C. none of the above

D. constant head method

3794. Terzaghis general bearing capacity formula for a strip footing (C Nc + y D Nq + 0.5 Y NTB. gives______________?
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A. net ultimate bearing capacity where C = unit cohesion

B. ultimate bearing capacity

C. net safe bearing capacity

D. safe bearing capacity

3795. Unconfmed compressive strength test is________________?
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A. consolidated undrained test

B. drained test

C. undrained test

D. consolidated drained test

3796. A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m2 to 200 kN/ m2. If the effective stress is further increased from 200 kN/ m2 to 400 kN/ m2, then the settlement of the same clay is__________________?
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A. none of the above

B. 10 mm

C. 40 mm

D. 20 mm

3797. Select the incorrect statement ?
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A. is limited to a maximum value of 45

B. is rarely more than 30 for fine grained soil

C. increases as the size of particles increases

D. ective angle of shearing resistance

E. increases as the soil gradation im-proves

3798. Shear strength of a soil is a unique function of__________________?
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A. effective stress only

B. total stress only

C. both effective stress and total stress

D. none of the above

3799. A pycnometer is used to determine_______________?
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A. water content and voids ratio

B. specific gravity and dry density

C. voids ratio and dry density

D. water content and specific gravity
3800. Degree of consolidation is________________?
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A. directly proportional to drainage path and inversely proportional to time

B. directly proportional to time and inversely proportional to drainage path

C. directly proportional to time and inversely proportional to square of drainage path

D. directly proportional to square of drainage path and inversely proportional to time