Residual soils are formed by

Water content of soil can

Which of the following types of soil is transported by gravitational forces ?

A fully saturated soil is said to be

Valid range for S, the degree of saturation of soil in percentage is

Constant head permeameter is used to test permeability of

A soil has a bulk density of 22 kN/m3 and water content 10 %. The dry density of soil is

If the voids of a soil mass are full of air only, the soil is termed as

Valid range for n, the percentage voids, is

Select the correct statement.

Voids ratio of a soil mass can

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

When the degree of saturation is zero, the soil mass under consideration represents

Select the correct range of density index,ID

If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is

If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is

The ratio of volume of voids to the total volume of soil mass is called

Relative density of a compacted dense sand is approximately equal to

If the sand in-situ is in its densest state, then the relative density of sand is

Which of the following methods is most accurate for the determination of the water content of soil ?

For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass ?

A pycnometer is used to determine

Stoke’s law is valid only if the size of particle is

In hydrometer analysis for a soil mass

The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in

Which of the following is a measure of particle size range ?

Which of the following statements is correct?

Uniformity coefficient of a soil is

According to Atterberg, the soil is said to be of medium plasticity if the plasticity index PI is

If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in

When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as

Toughness index is defined as the ratio of

If the plasticity index of a soil mass is zero, the soil is

The admixture of coarser particles like sand or silt to clay causes

Select the correct statement.

The water content of soil, which represents the boundary between plastic state and liquid state, is known as

Which of the following soils has more plasticity index ?

At liquid limit, all soils possess

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

According to IS classification, the range of silt size particles is

Highway Research Board (HRB. classification of soils is based on

Inorganic soils with low compressibility are represented by

Sand particles are made of

The clay mineral with the largest swelling and shrinkage characteristics is

Dispersed type of soil structure is an arrangement comprising particles having

Effective stress is

Rise of water table above the ground surface causes

The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively

If the water table rises upto ground surface, then the

Quick sand is a

The hydraulic head that would produce a quick condition in a sand stratum of thickness 1.5 m, specific gravity 2.67 and voids ratio 0.67 is equal to

Physical properties of a permeant which influence permeability are

Select the correct statement.

Effective stress on soil

If the permeability of a soil is 0.8 mm/sec, the type of soil is

Which of the following methods is more suitable for the determination of permeability of clayey soil ?

Which of the following methods is best suited for determination of permeability of coarse-grained soils ?

Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. f other things remain constant, the coefficient of permeability

Coefficient of permeability of soil

The average coefficient of permeability of natural deposits

The total discharge from two wells situated near to each other is

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

The most suitable method for drainage of fine grained cohesive soils is

Total number of stress components at a point within a soil mass loaded at its boundary is

The slope of isochrone at any point at a given time indicates the rate of change of

Within the consolidation process of a saturated clay

The value of compression index for a remoulded sample whose liquid limit is 50% is

Which one of the following clays behaves like a dense sand ?

Coefficient of consolidation of a soil is affected by

Degree of consolidation is

Time factor for a clay layer is

Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is

Coefficient of consolidation for clays normally

Direct measurement of permeability of the specimen at any stage of loading can be made

Compressibility of sandy soils is

Select the correct statement.

Coefficient of compressibility is

The ultimate consolidation settlement of a structure resting on a soil

The ultimate consolidation settlement of a soil is

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

Coarse grained soils are best compacted by a

With the increase in the amount of compaction energy

The maximum dry density upto which any soil can be compacted depends upon

For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as

Select the incorrect statement.

For a loose sand sample and a dense sand sample consolidated to the same effective stress

. The shear strength of a soil

. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear

. Skempton’s pore pressure coefficient B for saturated soil is

. Shear strength of a soil is a unique function of

. In a deposit of normally consolidated clay

. Select the incorrect statement. Effective angle of shearing resistance

. Unconfmed compressive strength test is

. A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. he values of cohesion and angle of internal friction for the soil are respectively

. The angle that Coulomb’s failure envelope makes with the horizontal is called

. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is

. Select the incorrect statement.

. If the shearing stress is zero on two planes, then the angle between the two planes is

. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on

. 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

. 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. Skempton’s pore pressure parameter B is

. Sensitivity of a soil can be defined as

. Rankine’s theory of earth pressure assumes that the back of the wall is

. The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is

. The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is

. The effect of cohesion on a soil is to

. A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of

. Coefficient of earth pressure at rest is

. Bishop’s method of stability analysis

. Allowable bearing pressure for a foundation depends upon

. The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing

. Terzaghi’s general bearing capacity formula for a strip footing C Nc + y D Nq + 0.5 Y NTB. gives Y =unit weight of soil D = depth of foundation B = width of foundation N„ Nq, NY = bearing capacity factors

. Terzaghi’s bearing capacity factors Nc, Nq and Nr are functions of

. In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be

. Select the incorrect statement.

. 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

. A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is

. Rise of water table in cohesionless soils upto ground surface reduces the net ultimate bearing capacity approximately by

. Contact pressure beneath a rigid footing resting on cohesive soil is