Engineering MCQ Quiz Hub

1. The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated
sands
clays
gravels
highly organic soils.

2. The specific gravity of quartz, is
2.65
2.72
2.85
2.9

3. If the cohesive force, (c), is 1.5 t/m2, the density (γ) of the soil is 2.0 t/m3, factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of the §lope, is
5 metres
8 metres
10 metres
12 metres

4. Pick up the correct statement from the following:
The phenomenon of quicksand generally occurs in the cohesionless soil
At critical hydraulic gradient, the saturated sand becomes quick
The critical gradient depends on the void ratio and the specific gravity
All the above.

5. Si particles
show dilatancy
swell when moist
possess high strength when dry
disintegrate easily.

6. If the back fill is having a uniform surcharge of intensity q per unit area, the lateral pressure will be
q times the lateral pressure within the surface
1/q times the lateral pressure within the surface
equal to a fill of height Z equal to q/r, where r is the density of the backfill
none of these.

7. Pick up the correct statement from the following:
Isotropic consolidation of clay can be obtained in the triaxial apparatus under equal all-round pressure.
If the present effective stress is the maximum to which the clay has ever been subjected, it is called normally consolidated clay
If the present effective stress in the past was more than present effective stress, it is called over-consolidated clay
All the above.

8. Through a point in a loaded soil, the principal stress is maximum on
minor principal plane
intermediate principal plane
major principal plane
none of these.

9. Maximum size of clay particles, is :
0.002 mm
0.04 mm
0.06 mm
0.08 mm

10. The capillary rise of water
depends upon the force responsible
increases as the size of the soil particles increases
decreases as the size of the soil particles decreases
is less in wet soil than in dry soil.

11. Coulomb's wedge theory assumes that
back fill is dry, cohesionless, homogeneous and isotropic
slip surface is the plane which passes through the heel of the wall
sliding wedge itself acts as a rigid body and the value of earth pressure is obtained by considering the limiting equilibrium of the wedge
all the above.

12. If dry density, water density and specific gravity of solids of a given soil sample are 1.6 g/cc, 1.84 g/cc and 2.56 respectively, the porosity of the soil sample, is
0.375
0.37
0.38
0.39

13. Pick up the correct statement applicable to plate load test
Width of the test pit for plate load test is made five times the width of the plate
At the centre of the test pit, a hole is dug out whose size is kept equal to the size of the test plate
Bottom level of the hole dug at the centre of the test pit, is kept at the level of the actual formation
All the above.

14. Pick up the correct statement applicable to plate load test
Width of the test pit for plate load test is made five times the width of the plate
At the centre of the test pit, a hole is dug out whose size is kept equal to the size of the test plate
At the centre of the test pit, a hole is dug out whose size is kept equal to the size of the test plate
All the above.

15. A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is
5
20
40
none of these.

16. The plasticity index is the numerical difference between
liquid limit and plastic limit
plastic limit and shrinkage limit
liquid limit and shrinkage limit
none of these.

17. Negative skin friction on piles
is caused due to relative settlement of the soil
is caused in soft clays
decreases the pile capacity
all of the above.

18. The ultimate bearing capacity of a soil, is
total load on the bearing area
safe load on the bearing area
load at which soil fails
load at which soil consolidates.

19. Transporting and redepositing soils, is done by
water
glacier
gravity
all the above.

20. A moist soil sample of volume 60 cc. weighs 108 g and its dried weight is 86.4 g. If its absolute density is 2.52, the degree of saturation is
54%
64%
74%
84%

21. Pick up the correct statement from the following:
O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve
The line which shows moisture content dry density relation for soil containing a constant percentage of air voids, is known as air void line
The weight of hammer used for compaction test is 25 kg
All the above.

22. 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
Resilience of soils
Elasticity of soils
Compressibility of soils
None of these.

23. 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
0.91
0.92
0.93
0.95

24. 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
0.01
0.02
0.05
0.001

25. Pick up the incorrect statement from the following:
The smaller the size of the pores, the higher the water can rise above the water table.
Below the water table, the pore water may be static.
The hydrostatic pressure depends on the depth below the water level.
None of these.

26. The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known
liquid limit
plastic limit
shrinkage limit
permeability limit.

27. A sample of saturated soil has 30% water content and the specific gravity of soil grains is 2.6. The dry density of the soil mass in g/cm3, is
1.47
1.82
1.92
none of these.

28. The specific gravity of sands, is approximately
1.6
2
2.2
2.6

29. If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is
1.1
1.15
1.2
1.25

30. The minimum centre to centre distance of friction piles of 1 m diameter, is
2 m
2 m to 3 m
3 m to 4 m
5 m

31. Over-consolidation of soils is caused due to
erosion of over burden
melting of ice sheets after glaciation
permanent rise of water table
all the above.

32. Darcy's law is applicable to seepage if a soil is
homogeneous
isotropic
incompressible
all the above.

33. Depending upon the properties of a material, the failure envelope may
be either straight or curved
pass through the origin of stress
intersect the shear stress axis
all the above.

34. 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
100 years
120 years
140 years
160 years

35. The maximum net pressure intensity causing shear failure of soil, is known
safe bearing capacity
net safe bearing capacity
net ultimate bearing capacity
ultimate bearing capacity.

36. The factor which affects the compaction, is
moisture content
compacting content
method of compaction
All the above.

37. The compression resulting from a long term static load and consequent escape of pore water, is known as
compaction
consolidation
swelling
none of these.

38. Soil classification of composite soils, exclusively based on the particle size distribution, is known
particle classification
textural classification
High Way Research Board classification
unified soil classification.

39. The coefficient of curvature for a well graded soil, must be between
0.5 to 1.0
1.0 to 3.0
3.0 to 4.0
4.0 to 5.0

40. 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
0.55
0.65
0.75
0.8

41. The shear resistance of a soil is con-tituted basically of the following component.
The frictional resistance to translocation between the individual soil particles at their contact point
To the structural relation to displacement of the soil because of the interlocking of the particles
Cohesion and adhesion between the surfaces of the soil particles
All the above.