Geotechnical Engineering MCQs Set-1

Page 1 of 5

1.

Silts have the following property

no plasticity

elasticity

limited plasticity

plasticity

2.

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

3.

Non-cohesive soil is

clay

none of these

silt

sand

4.

The minimum size of grains of silt soil is about

0.06 mm

0.3 mm

0.002 mm

0.01 mm

5.

The soil transported by wind is called

aeolian soil

lacustrine soil

marine soil

alluvial soil

6.

Which of the following is a measure of particle size range

None of the above

Uniformity coefficient

Effective size

Coefficient of curvature

7.

The specific gravity of sandy soils is

2.6

2.2

2.0

1.5

8.

The friction offered by sand is equal to

Sliding friction

Rolling friction

All of the above

Resistance due to interlocking

9.

The soil transported by flowing water is called

lacustrine soil

alluvial soil

marine soil

aeolian soil

10.

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

Degree of saturation

Density

Unit weight of water

Moisture content

Page 2 of 5

11.

Clay is generally

none of these

permeable

cohesive

having large particle size

12.

Most suitable method for drainage of fine grained soil is

vacuum method

deep well system

well point system

electro-osmosis method

13.

The maximum size of grains of silt soil is about

0.1 mm

0.075 mm

2 mm

0.5 mm

14.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Silty soil

Sandy soil

Clayey soil

Stratified soil

15.

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

Plasticity

Yielding

Strain softening

Strain hardening

16.

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

Grading

Bulk density

Relative density

Dry density

17.

'Talus' is the soil transported by

glacier

wind

gravitational force

water

18.

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

well graded soil

poorly graded soil

uniformly graded soil

none of these

19.

Darcy's law is not applicable for flow in

fine sands

silts

clays

gravels

20.

The biggest size of clay particles is

0.0002mm

0.075mm

0.002mm

0.02mm

Page 3 of 5

21.

Sieve analysis is used when size of particle is

0.01mm

> 0.075mm

< 0.075mm

4.75mm

22.

Stokes law is valid only if the size of particle is

All of the above

> 0.2mm

Between 0.2mm and 0.0002mm

< 0.0002mm

23.

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

2 mm

4.75 mm

1.50 micron

7.5 mm

24.

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

Stiff clay

Bentonite

Organic clay

Dense sand

25.

A flat grain size distribution curve shows a

Wide range of grain size

Uniform grain size

Grain size from two representative fractions

Narrow range of grain size

26.

Undisturbed soil samples are obtained by

Direct excavations

Thin walled samples

Augers

Thick walled samples

27.

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

Void fraction

Solid ratio

Void ratio

Porosity

28.

The IS classification of soils is

Textural classification

Highway research board classification

Modified unified classification

Particles size classification

29.

Sedimentation analysis is used when size of particle is

< 0.075mm

0.01mm

> 0.75mm

4.75mm

30.

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

Dense sand

Stiff clay

Loose sand

Bentonite

Page 4 of 5

31.

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

Porosity

Air content

None of these

Void density

32.

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

Silt, sand, colloids, clay

Sand, silt, clay, colloids

Sand, silt, colloids, clay

Clay, silt, sand, colloids

33.

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

0.150 mm

0.075 mm

4.75 mm

0.300 mm

34.

On adding bitumen to soil

compaction becomes easy

voids get filled

water proofing improves

cohesion of soil increases

35.

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

fully saturated soil

hydrated soil

moist soil

plastic soil

36.

Group index of soil ranges such that

0 <= GI <=20

0 < GI < 20

0 < GI < ∞

0 <= GI <=25

37.

The effective size of a soil is

D40

D30

D20

D10

38.

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

Moisture content

Capillarity

None of these

Permeability

39.

The percentage of the porosity of compacted sand is about

15 to 30 %

40 to 50 %

30 to 40 %

5 to 15%

40.

As per IS the specific gravity of soil is determined at

27°C

47°C

10°C

17°C

Page 5 of 5

41.

'Loess' is silty clay formed by the action of

glacier

gravitational force

water

wind

42.

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

Zero-air voids line

Proctor curve

Azimuth

Constant density line

43.

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

drift

loess

aeolian soil

Colluvial soil

44.

Uniformity coefficient of soil is

<1

>1

<=1

=1

45.

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

none of these

e= w/S.G

e= w.S/G

e= w.G/S

46.

Which of the following soils has the finest grains?

Sands

clays

Silts

Fine sands

Geotechnical Engineering MCQs Set-1

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