laboursonline – MCQs, Mock Tests | Engineering Civil Engineering (MCQS) Soil Mechanics and Foundation Engineering SET 6

Pick up the cohesive soil from the following:

1. Red earth
2. Clay
3. Black cotton soil
4. Compacted ground.

✅ Correct Answer: 3

Pile foundations are generally preferred to for

1. bridge foundations
2. sky scrapper buildings
3. residential buildings
4. runways.

✅ Correct Answer: 2

The angle of internal friction of clays, is usually

1. 0° to 5°
2. 5° to 20°
3. 20° to 30°
4. 30° to 45°

✅ Correct Answer: 2

The specific yield of soil depends upon

1. compaction of stratum
2. distribution of pores
3. shape and size of particles
4. all the above.

✅ Correct Answer: 4

Pick up the correct statement from the following:

1. In hydrometer method, weight Wd per ml of suspension is found directly
2. In pipette analysis, weight Wd per ml of suspension is found indirectly
3. . In pipette analysis, weight Wd per ml of suspension is found directly
4. None of these.

✅ Correct Answer: 3

Pick up the correct statement from the following:

1. Coefficient of compressibility is the decrease in void ratio per unit increase of pressure
2. The percent settlement at any time is called degree of consolidation
3. Time factor is a dimensionless quantity
4. All the above.

✅ Correct Answer: 4

Loess' is silty clay formed by the action of

1. water
2. glacier
3. wind
4. gravitational force.

✅ Correct Answer: 3

The maximum possible value nf dry density is referred to as

1. dry density
2. zero air voids
3. saturation dry density
4. all the above.

✅ Correct Answer: 4

Failure of a slope occurs only when total shear force is

1. equal to total shearing strength
2. greater than total shearing strength
3. less than total shearing strength
4. none of these

✅ Correct Answer: 2

Pick up the correct statement from the following:

1. A soil having pH value more than 7 is an acidic soil
2. . A soil having pH value less than 7 is an acidic soil
3. A soil having pH value more than 7 is an alkaline soil
4. A soil containing chemicals for the manufacture of portland cement is preferred.

✅ Correct Answer: 2

Cohesionless soil is

1. sand
2. silt
3. clay
4. clay and silt.

✅ Correct Answer: 1

The shearing force acting along the slice of a curved surface of slippage, causes the soil to slide

1. down at the centre
2. down at the toe
3. upward at the centre
4. none of these.

✅ Correct Answer: 1

The seepage exit gradient in a soil is the ratio of

1. total head to the length of seepage
2. flow line to slope
3. head upstream to that at downstream
4. none of these.

✅ Correct Answer: 4

Sedimentation analysis is based on the assumption:

1. soil particles are spherical
2. particles settle independent of other particles
3. walls of the jar do not affect the settlement .
4. all the above.

✅ Correct Answer: 4

The maximum pressure which a soil can carry without shear failure, is called

1. safe bearing capacity
2. net safe bearing capacity
3. net ultimate bearing capacity
4. ultimate bearing capacity.

✅ Correct Answer: 1

For general engineering purposes, soils are classified by

1. particle size classification system
2. textural classification system
3. High Way Research Board (HRB), classification system
4. unified soil classification system.

✅ Correct Answer: 4

If there is no impervious boundary at the bottom of a hydraulic structure, stream lines tend to follow :

1. a straight line
2. a parabola
3. a semi-ellipse
4. a semi-circle.

✅ Correct Answer: 3

The change of moisture content of soils, changes the

1. value of the angle of repose
2. amount of compaction required
3. cohesive strength of soil
4. all the above.

✅ Correct Answer: 4

A failure wedge develops if a retaining wall

1. moves away from the backfill
2. moves towards the backfill
3. sinks downwards
4. stresses equally by vertical and horizontal forces.

✅ Correct Answer: 1

For determining the ultimate bearing capacity of soil, the recommended size of a square bearing plate to be used in load plate test should be 30 to 75 cm square with a minimum thickness of

1. 5 mm
2. 10 mm
3. 15 mm
4. 25 mm

✅ Correct Answer: 4