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MCQOPTIONS
This section includes 5814 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 4851. |
A direct shear test possesses the following disadvantage: |
| A. | A relatively thin thickness of sample permits quick drainage |
| B. | A relatively thin thickness of sample permits quick dissipation of pore pressure developed during the test |
| C. | As the test progresses the area under shear, gradually changes |
| D. | none of these. |
| Answer» D. none of these. | |
| 4852. |
The plasticity of fine soils may be assessed by means of |
| A. | dry strength test |
| B. | toughness test |
| C. | dilatancy test |
| D. | all of these. |
| Answer» E. | |
| 4853. |
The density of soil can be increased |
| A. | by reducing the space occupied by air |
| B. | by elastic compression of soil grains |
| C. | by expelling water from pores |
| D. | All the above. |
| Answer» E. | |
| 4854. |
The length/diameter ratio of cylindrical specimens used in triaxial test, is generally |
| A. | 1 |
| B. | 1.5 |
| C. | 2 |
| D. | 2.5 |
| E. | 3 |
| Answer» D. 2.5 | |
| 4855. |
If voids ratio is 0.67, water content is 0.188 and specific gravity is 2.68, the degree of saturation of the soil, is |
| A. | 25% |
| B. | 40% |
| C. | 60% |
| D. | 75% |
| Answer» E. | |
| 4856. |
The pressure that builds up in pore water due to load increment on the soil, is termed |
| A. | excess pore pressure |
| B. | excess hydrostatic pressure |
| C. | hydrodynamic pressure |
| D. | all the above. |
| Answer» E. | |
| 4857. |
If water content of a soil is 40%, G is 2.70 and void ratio is 1.35, the degree of saturation is |
| A. | 70% |
| B. | 75% |
| C. | 80% |
| D. | 85% |
| E. | 90% |
| Answer» D. 85% | |
| 4858. |
The ratio of the weight of water to the weight of solids in a given mass of soil, is known |
| A. | porosity |
| B. | specific gravity |
| C. | void ratio |
| D. | water content. |
| Answer» E. | |
| 4859. |
If the natural moisture content, the liquid limit and plastic limit of a soil sample are stated as 30.5%, 42.5% and 22.5% respectively, the ratio of liquidity index and plastic index, is |
| A. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/45-11-291-1.png"> |
| B. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/45-11-291-2.png"> |
| C. | 2 |
| D. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/45-11-291-4.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/45-11-291-4.png"> | |
| 4860. |
Which one of the following statements is true for Mohr-Coulomb envelope ? |
| A. | Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line |
| B. | The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear |
| C. | Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction |
| D. | For an ideal pure friction material, the straight line passes through the origin. |
| E. | All the above. |
| Answer» F. | |
| 4861. |
On wetting, cohesive soils, |
| A. | loose permeability |
| B. | gain shear strength |
| C. | loose elasticity |
| D. | decrease their shear strength. |
| Answer» E. | |
| 4862. |
A soil sample of mass specific gravity 1.92, has a moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is |
| A. | 0.858 |
| B. | 0.860 |
| C. | 0.862 |
| D. | 0.864 |
| Answer» D. 0.864 | |
| 4863. |
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. | none of these. |
| Answer» D. none of these. | |
| 4864. |
In non-cohesive soil in passive state of plastic equilibrium |
| A. | major principal stress is horizontal |
| B. | minor principal stress is vertical |
| C. | major principal stress is vertical |
| D. | minor and major principal stresses are equally inclined to the horizontal. |
| Answer» C. major principal stress is vertical | |
| 4865. |
The zero atmospheric pressure is at |
| A. | sea level |
| B. | mean sea level |
| C. | water table |
| D. | phreatic surface |
| E. | both (c) and (d) of the above. |
| Answer» F. | |
| 4866. |
A soil mass coated with a thin layer of paraffin weighs 460 g. When immersed, it displaces 299 cc of water. The weight of paraffin is 10 g. If specific gravity of solids is 2.5 and that of paraffin 0.9, the void ratio of soil, is |
| A. | 0.55 |
| B. | 0.60 |
| C. | 0.65 |
| D. | 0.70 |
| Answer» C. 0.65 | |
| 4867. |
Pick up the incorrect definition from the following: |
| A. | Ratio of the compressive strength of unconfined undisturbed soil to that of remoulded soil, is known as the sensitivity of the soil sample |
| B. | The rotation of soil particles into stable state while remoulding, is known as the thiostropy of soil |
| C. | The water content at which a soil changes from the liquid state to solid state, is known liquid limit of the soil |
| D. | The water content at which a soil flows, is known plastic limit of the soil |
| E. | None of these. |
| Answer» E. None of these. | |
| 4868. |
In a fow net |
| A. | flow lines and equipotential lines cross each other at right angles |
| B. | fields are rectangles whose length is twice the breadth |
| C. | smaller the dimensions of the field, smaller will be the hydraulic gradient and velocity of flow through it |
| D. | for homogeneous soil, the curves are smooth and circular. |
| Answer» B. fields are rectangles whose length is twice the breadth | |
| 4869. |
The ratio of the volume of water present in a given soil mass to the total volume of its voids, is known |
| A. | porosity |
| B. | void ratio |
| C. | percentage voids |
| D. | degree of saturation. |
| Answer» E. | |
| 4870. |
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 limit and solid limit. |
| Answer» B. plastic limit and semi solid limit | |
| 4871. |
A pycnometer is used to determine |
| A. | voids ratio |
| B. | dry density |
| C. | water content |
| D. | density index. |
| Answer» D. density index. | |
| 4872. |
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. | alcohol method. |
| Answer» B. oven-drying method | |
| 4873. |
The compressibility of clays, is caused due to: |
| A. | expulsion of double layer water from in between the grains |
| B. | sliping of particles to new positions of greater density |
| C. | bending of particles as elastic sheets |
| D. | all the above. |
| Answer» E. | |
| 4874. |
The ratio of the difference between the void ratio of the soil in its loosest state and its natural void ratio (e) to the difference between the void ratios in the loosest and fully dense state, is generally termed as |
| A. | degree of density |
| B. | relativity |
| C. | density index |
| D. | all the above. |
| Answer» E. | |
| 4875. |
The equation = C + tan is given by |
| A. | Rankine |
| B. | Coulomb |
| C. | Culaman |
| D. | Mohr. |
| Answer» C. Culaman | |
| 4876. |
According to the Indian Standards the specific gravity is the ratio of the unit weight of soil solids to that of water at a temperature of |
| A. | 17 C |
| B. | 23 C |
| C. | 27 C |
| D. | 30 |
| Answer» D. 30 | |
| 4877. |
If C is cohesion, F is factor of safety, is unit weight of soil and H is the maximum height of embankment, the stability number, is |
| A. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-1.png"> |
| B. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-2.png"> |
| C. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-3.png"> |
| D. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-4.png"> |
| E. | <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-5.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/soil-mechanics-and-foundation-engineering/47-11-240-3.png"> | |
| 4878. |
The soil which contains finest grain particles, is |
| A. | coarse sand |
| B. | fine sand |
| C. | silt |
| D. | clay. |
| Answer» E. | |
| 4879. |
The angle between the directions of the failure and the major principal plane, is equal to |
| A. | 90 + effective angle of shearing resistance |
| B. | 90 + half of the angle of shearing resistance |
| C. | 45 - half of the angle of shearing resistance |
| D. | 45 + half of the angle of shearing resistance. |
| Answer» E. | |
| 4880. |
The shearing strength of a cohesion-less soil depends upon |
| A. | dry density |
| B. | rate of loading |
| C. | confining pressure |
| D. | nature of loading. |
| Answer» D. nature of loading. | |
| 4881. |
A partially saturated soil is classified as |
| A. | one phase soil |
| B. | two phase soil |
| C. | three phase soil |
| D. | four phase soil. |
| Answer» D. four phase soil. | |
| 4882. |
A stratum of clay 2 m thick will get consolidated 80% in 10 years. For the 80% consolidation of 8 m thick stratum of the same clay, the time required is |
| A. | 100 years |
| B. | 120 years |
| C. | 140 years |
| D. | 160 years |
| E. | 180 years. |
| Answer» E. 180 years. | |
| 4883. |
The maximum net pressure intensity causing shear failure of soil, is known |
| A. | safe bearing capacity |
| B. | net safe bearing capacity |
| C. | net ultimate bearing capacity |
| D. | ultimate bearing capacity. |
| Answer» D. ultimate bearing capacity. | |
| 4884. |
The factor which affects the compaction, is |
| A. | moisture content |
| B. | compacting content |
| C. | method of compaction |
| D. | type of soil |
| E. | All the above. |
| Answer» F. | |
| 4885. |
The compression resulting from a long term static load and consequent escape of pore water, is known as |
| A. | compaction |
| B. | consolidation |
| C. | swelling |
| D. | none of these. |
| Answer» C. swelling | |
| 4886. |
Over-consolidation of soils is caused due to |
| A. | erosion of over burden |
| B. | melting of ice sheets after glaciation |
| C. | permanent rise of water table |
| D. | all the above. |
| Answer» E. | |
| 4887. |
If a soil undergoes a change in shape and volume by application of external loads over it, but recovers its shape and volume immediately after removal of the load, the property of the soil is said to be |
| A. | Resilience of soils |
| B. | Elasticity of soils |
| C. | Compressibility of soils |
| D. | None of these. |
| Answer» C. Compressibility of soils | |
| 4888. |
Soil classification of composite soils, exclusively based on the particle size distribution, is known |
| A. | particle classification |
| B. | textural classification |
| C. | High Way Research Board classification |
| D. | unified soil classification. |
| Answer» C. High Way Research Board classification | |
| 4889. |
If the unit weight of sand particles is 2.696 g/cc. and porosity in loose state is 44%, the critical hydraulic gradient for quick sand condition, is |
| A. | 0.91 |
| B. | 0.92 |
| C. | 0.93 |
| D. | 0.94 |
| E. | 0.95 |
| Answer» F. | |
| 4890. |
The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2, the coefficient of compressibility is |
| A. | 0.01 |
| B. | 0.02 |
| C. | 0.05 |
| D. | 0.001 |
| Answer» B. 0.02 | |
| 4891. |
Negative skin friction on piles |
| A. | is caused due to relative settlement of the soil |
| B. | is caused in soft clays |
| C. | decreases the pile capacity |
| D. | all of the above. |
| Answer» E. | |
| 4892. |
The coefficient of curvature for a well graded soil, must be between |
| A. | 0.5 to 1.0 |
| B. | 1.0 to 3.0 |
| C. | 3.0 to 4.0 |
| D. | 4.0 to 5.0 |
| Answer» C. 3.0 to 4.0 | |
| 4893. |
A moist soil sample weighing 108 g has a volume of 60 cc. If water content is 25% and value of G = 2.52, the void ratio is |
| A. | 0.55 |
| B. | 0.65 |
| C. | 0.75 |
| D. | 0.80 |
| Answer» D. 0.80 | |
| 4894. |
The shear resistance of a soil is con-tituted basically of the following component. |
| A. | The frictional resistance to translocation between the individual soil particles at their contact point |
| B. | To the structural relation to displacement of the soil because of the interlocking of the particles |
| C. | Cohesion and adhesion between the surfaces of the soil particles |
| D. | All the above. |
| Answer» E. | |
| 4895. |
Terzaghi's analysis assumes : |
| A. | soil is homogeneous and isotropic |
| B. | elastic zone has straight boundaries inclined at = to the horizontal and plastic zones fully developed |
| C. | failure zones do not extend above the horizontal plane through the base of the footing |
| D. | all the above. |
| Answer» E. | |
| 4896. |
The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known |
| A. | liquid limit |
| B. | plastic limit |
| C. | shrinkage limit |
| D. | permeability limit. |
| Answer» D. permeability limit. | |
| 4897. |
Pick up the correct statement applicable to plate load test |
| A. | Width of the test pit for plate load test is made five times the width of the plate |
| B. | At the centre of the test pit, a hole is dug out whose size is kept equal to the size of the test plate |
| C. | Bottom level of the hole dug at the centre of the test pit, is kept at the level of the actual formation |
| D. | Ratio of the depth of the hole to the width of the test plate is the same as the ratio of the depth of the actual formation to the width of the formation |
| E. | All the above. |
| Answer» F. | |
| 4898. |
The plasticity index is the numerical difference between |
| A. | liquid limit and plastic limit |
| B. | plastic limit and shrinkage limit |
| C. | liquid limit and shrinkage limit |
| D. | none of these. |
| Answer» B. plastic limit and shrinkage limit | |
| 4899. |
A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is |
| A. | 5 |
| B. | 20 |
| C. | 40 |
| D. | none of these. |
| Answer» E. | |
| 4900. |
Metric chains are generally available in |
| A. | 10 m and 20 m length |
| B. | 15 m and 20 m length |
| C. | 20 m and 30 m length |
| D. | 25 m and 100 m length |
| Answer» D. 25 m and 100 m length | |