Geotechnical Engineering MCQs Set-1

Page 1 of 5

1.

When the pores of a soil are full of water, then the soil will be called

moist soil

hydrated soil

plastic soil

fully saturated soil

2.

Sieve analysis is used when size of particle is

> 0.075mm

< 0.075mm

4.75mm

0.01mm

3.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Clayey soil

Sandy soil

Stratified soil

Silty soil

4.

The property of a soil which allows it to be deformed rapidly, without rupture, with elastic rebound and without volume changes is called as

Yielding

Strain hardening

Plasticity

Strain softening

5.

The friction offered by sand is equal to

Resistance due to interlocking

Sliding friction

Rolling friction

All of the above

6.

The dry density of which sample is expected to be highest?

Organic clay

Dense sand

Bentonite

Stiff clay

7.

As per IS the specific gravity of soil is determined at

17°C

47°C

27°C

10°C

8.

Clay is generally

having large particle size

permeable

cohesive

none of these

9.

The ratio between the total volume of voids and the total volume of solids is called

Porosity

Void fraction

Void ratio

Solid ratio

10.

On adding bitumen to soil

voids get filled

cohesion of soil increases

compaction becomes easy

water proofing improves

Page 2 of 5

11.

The correct increasing order of specific surface i.e. surface area per mass of the given soil is

Sand, silt, colloids, clay

Sand, silt, clay, colloids

Silt, sand, colloids, clay

Clay, silt, sand, colloids

12.

The ratio of volume of air voids to the volume of voids is called

Void density

Porosity

Air content

None of these

13.

A flat grain size distribution curve shows a

Narrow range of grain size

Grain size from two representative fractions

Wide range of grain size

Uniform grain size

14.

If the value of uniformity coefficient of a soil sample is nearly equal to one. This sample will be designated as

none of these

uniformly graded soil

well graded soil

poorly graded soil

15.

Stokes law is valid only if the size of particle is

All of the above

Between 0.2mm and 0.0002mm

< 0.0002mm

> 0.2mm

16.

Uniformity coefficient of soil is

<=1

>1

=1

<1

17.

Group index of soil ranges such that

0 <= GI <=20

0 <= GI <=25

0 < GI < ∞

0 < GI < 20

18.

The maximum size of grains of silt soil is about

0.1 mm

0.075 mm

0.5 mm

2 mm

19.

Darcy's law is not applicable for flow in

silts

clays

fine sands

gravels

20.

'Talus' is the soil transported by

wind

gravitational force

glacier

water

Page 3 of 5

21.

The soil transported by flowing water is called

marine soil

aeolian soil

alluvial soil

lacustrine soil

22.

Coarse sieve analysis is done for that material which retains on the IS sieve of opening size

4.75 mm

7.5 mm

1.50 micron

2 mm

23.

The soil collected at the base of a steep cliff due to the effect of the force of gravity on the broken rock fragment is

aeolian soil

Colluvial soil

loess

drift

24.

Sieve analysis of a soil sample is done, if the particle do not pass through square openings of

0.150 mm

4.75 mm

0.300 mm

0.075 mm

25.

Which of the following soils has the finest grains?

clays

Sands

Silts

Fine sands

26.

'Loess' is silty clay formed by the action of

water

wind

glacier

gravitational force

27.

The best induction of the behaviour of a deposit of sand under load can be obtained from its

Bulk density

Grading

Dry density

Relative density

28.

The percentage of the porosity of compacted sand is about

5 to 15%

15 to 30 %

30 to 40 %

40 to 50 %

29.

The soil transported by wind is called

alluvial soil

marine soil

aeolian soil

lacustrine soil

30.

Which of the following is a measure of particle size range

Uniformity coefficient

Effective size

None of the above

Coefficient of curvature

Page 4 of 5

31.

The biggest size of clay particles is

0.002mm

0.0002mm

0.02mm

0.075mm

32.

The relation between void ratio e, water content w, specific gravity G, and degree of saturation S, for a soil sample is

e= w.G/S

none of these

e= w/S.G

e= w.S/G

33.

A line which show the water content dry density relation for the compacted soil containing no air voids is known as

Azimuth

Proctor curve

Constant density line

Zero-air voids line

34.

Silts have the following property

elasticity

plasticity

limited plasticity

no plasticity

35.

The IS classification of soils is

Highway research board classification

Particles size classification

Textural classification

Modified unified classification

36.

The specific gravity of sandy soils is

2.6

2.2

1.5

2.0

37.

The property of a soil, which permits water to percolate through it is called

Moisture content

None of these

Permeability

Capillarity

38.

The effective size of a soil is

D10

D30

D20

D40

39.

The range of void ratio between which quick sand condition occurs in cohesion-less granular soil deposits is

0.4-0.5

1.0-1.1

0.8-0.9

0.6-0.7

40.

Sedimentation analysis is used when size of particle is

4.75mm

> 0.75mm

< 0.075mm

0.01mm

Page 5 of 5

41.

Undisturbed soil samples are obtained by

Thick walled samples

Thin walled samples

Direct excavations

Augers

42.

The weight of water per unit of volume of water is called

Degree of saturation

Density

Moisture content

Unit weight of water

43.

Non-cohesive soil is

sand

none of these

silt

clay

44.

The minimum size of grains of silt soil is about

0.002 mm

0.06 mm

0.3 mm

0.01 mm

45.

Most suitable method for drainage of fine grained soil is

well point system

vacuum method

electro-osmosis method

deep well system

46.

The dry density of which sample may be expected to be least?

Dense sand

Bentonite

Stiff clay

Loose sand

Geotechnical Engineering MCQs Set-1

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