Geotechnical Engineering MCQs Set-1

Page 1 of 5

1.

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

Moisture content

Density

Degree of saturation

Unit weight of water

2.

Most suitable method for drainage of fine grained soil is

electro-osmosis method

deep well system

well point system

vacuum method

3.

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

1.50 micron

4.75 mm

7.5 mm

2 mm

4.

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

Loose sand

Stiff clay

Bentonite

Dense sand

5.

Which of the following soils has the finest grains?

Sands

Fine sands

Silts

clays

6.

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

0.075 mm

4.75 mm

0.300 mm

0.150 mm

7.

'Talus' is the soil transported by

wind

gravitational force

glacier

water

8.

The IS classification of soils is

Highway research board classification

Textural classification

Particles size classification

Modified unified classification

9.

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

10.

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

Air content

None of these

Void density

Porosity

Page 2 of 5

11.

The maximum size of grains of silt soil is about

0.1 mm

2 mm

0.075 mm

0.5 mm

12.

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

Sand, silt, clay, colloids

Sand, silt, colloids, clay

Silt, sand, colloids, clay

Clay, silt, sand, colloids

13.

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

Proctor curve

Constant density line

Azimuth

Zero-air voids line

14.

Silts have the following property

elasticity

limited plasticity

plasticity

no plasticity

15.

'Loess' is silty clay formed by the action of

gravitational force

glacier

wind

water

16.

Darcy's law is not applicable for flow in

clays

gravels

silts

fine sands

17.

Undisturbed soil samples are obtained by

Augers

Thin walled samples

Direct excavations

Thick walled samples

18.

A flat grain size distribution curve shows a

Wide range of grain size

Grain size from two representative fractions

Uniform grain size

Narrow range of grain size

19.

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

Solid ratio

Void fraction

Void ratio

Porosity

20.

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

Strain hardening

Yielding

Strain softening

Page 3 of 5

21.

Non-cohesive soil is

silt

clay

none of these

sand

22.

The friction offered by sand is equal to

Sliding friction

Resistance due to interlocking

Rolling friction

All of the above

23.

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

moist soil

hydrated soil

fully saturated soil

plastic soil

24.

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

Dense sand

Bentonite

Stiff clay

Organic clay

25.

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

26.

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

Capillarity

Permeability

Moisture content

None of these

27.

On adding bitumen to soil

water proofing improves

voids get filled

compaction becomes easy

cohesion of soil increases

28.

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

0.8-0.9

0.6-0.7

0.4-0.5

1.0-1.1

29.

The soil transported by wind is called

marine soil

lacustrine soil

aeolian soil

alluvial soil

30.

The effective size of a soil is

D10

D20

D40

D30

Page 4 of 5

31.

As per IS the specific gravity of soil is determined at

47°C

17°C

27°C

10°C

32.

The biggest size of clay particles is

0.02mm

0.0002mm

0.002mm

0.075mm

33.

Which of the following is a measure of particle size range

Uniformity coefficient

None of the above

Coefficient of curvature

Effective size

34.

Sedimentation analysis is used when size of particle is

> 0.75mm

4.75mm

< 0.075mm

0.01mm

35.

Group index of soil ranges such that

0 <= GI <=20

0 <= GI <=25

0 < GI < 20

0 < GI < ∞

36.

Clay is generally

cohesive

having large particle size

permeable

none of these

37.

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

poorly graded soil

well graded soil

38.

The minimum size of grains of silt soil is about

0.002 mm

0.06 mm

0.3 mm

0.01 mm

39.

Uniformity coefficient of soil is

=1

<=1

>1

<1

40.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Stratified soil

Silty soil

Clayey soil

Sandy soil

Page 5 of 5

41.

Sieve analysis is used when size of particle is

4.75mm

0.01mm

< 0.075mm

> 0.075mm

42.

The soil transported by flowing water is called

alluvial soil

marine soil

lacustrine soil

aeolian soil

43.

The percentage of the porosity of compacted sand is about

40 to 50 %

5 to 15%

30 to 40 %

15 to 30 %

44.

The specific gravity of sandy soils is

1.5

2.0

2.2

2.6

45.

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

Colluvial soil

loess

aeolian soil

drift

46.

Stokes law is valid only if the size of particle is

> 0.2mm

All of the above

< 0.0002mm

Between 0.2mm and 0.0002mm

Geotechnical Engineering MCQs Set-1

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