Geotechnical Engineering MCQs Set-1

Page 1 of 5

1.

Group index of soil ranges such that

0 <= GI <=25

0 < GI < 20

0 < GI < ∞

0 <= GI <=20

2.

Most suitable method for drainage of fine grained soil is

electro-osmosis method

deep well system

well point system

vacuum method

3.

Silts have the following property

elasticity

plasticity

limited plasticity

no plasticity

4.

The maximum size of grains of silt soil is about

0.1 mm

2 mm

0.075 mm

0.5 mm

5.

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

Organic clay

Bentonite

Dense sand

Stiff clay

6.

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

0.150 mm

0.300 mm

0.075 mm

4.75 mm

7.

Undisturbed soil samples are obtained by

Direct excavations

Thick walled samples

Thin walled samples

Augers

8.

The friction offered by sand is equal to

Rolling friction

All of the above

Resistance due to interlocking

Sliding friction

9.

The minimum size of grains of silt soil is about

0.002 mm

0.06 mm

0.01 mm

0.3 mm

10.

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

Moisture content

Density

Unit weight of water

Degree of saturation

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11.

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

12.

The biggest size of clay particles is

0.02mm

0.002mm

0.0002mm

0.075mm

13.

Which of the following soils has the finest grains?

clays

Sands

Fine sands

Silts

14.

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

Constant density line

Zero-air voids line

Proctor curve

Azimuth

15.

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

Stiff clay

Loose sand

Bentonite

Dense sand

16.

Non-cohesive soil is

silt

sand

clay

none of these

17.

'Loess' is silty clay formed by the action of

water

gravitational force

wind

glacier

18.

As per IS the specific gravity of soil is determined at

27°C

10°C

47°C

17°C

19.

The percentage of the porosity of compacted sand is about

5 to 15%

40 to 50 %

30 to 40 %

15 to 30 %

20.

The effective size of a soil is

D10

D30

D20

D40

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21.

The specific gravity of sandy soils is

2.0

1.5

2.2

2.6

22.

Sieve analysis is used when size of particle is

4.75mm

< 0.075mm

> 0.075mm

0.01mm

23.

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

Relative density

Bulk density

Grading

Dry density

24.

On adding bitumen to soil

compaction becomes easy

voids get filled

water proofing improves

cohesion of soil increases

25.

The soil transported by wind is called

marine soil

alluvial soil

lacustrine soil

aeolian soil

26.

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

Air content

Porosity

Void density

None of these

27.

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

7.5 mm

4.75 mm

2 mm

1.50 micron

28.

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

Porosity

Void fraction

Void ratio

Solid ratio

29.

Which of the following is a measure of particle size range

None of the above

Coefficient of curvature

Effective size

Uniformity coefficient

30.

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

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31.

Darcy's law is not applicable for flow in

clays

gravels

fine sands

silts

32.

Clay is generally

cohesive

none of these

having large particle size

permeable

33.

The IS classification of soils is

Textural classification

Particles size classification

Highway research board classification

Modified unified classification

34.

Stokes law is valid only if the size of particle is

All of the above

< 0.0002mm

Between 0.2mm and 0.0002mm

> 0.2mm

35.

The soil transported by flowing water is called

alluvial soil

lacustrine soil

aeolian soil

marine soil

36.

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

Moisture content

None of these

Capillarity

Permeability

37.

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

well graded soil

uniformly graded soil

poorly graded soil

none of these

38.

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

loess

aeolian soil

Colluvial soil

drift

39.

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

40.

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

hydrated soil

fully saturated soil

moist soil

plastic soil

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41.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Sandy soil

Silty soil

Clayey soil

Stratified soil

42.

Uniformity coefficient of soil is

=1

<=1

>1

<1

43.

'Talus' is the soil transported by

water

gravitational force

glacier

wind

44.

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

0.4-0.5

0.6-0.7

1.0-1.1

0.8-0.9

45.

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

Sand, silt, clay, colloids

Silt, sand, colloids, clay

Sand, silt, colloids, clay

Clay, silt, sand, colloids

46.

Sedimentation analysis is used when size of particle is

0.01mm

4.75mm

> 0.75mm

< 0.075mm

Geotechnical Engineering MCQs Set-1

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