Geotechnical Engineering MCQs Set-1

Page 1 of 5

1.

Group index of soil ranges such that

0 <= GI <=20

0 < GI < 20

0 < GI < ∞

0 <= GI <=25

2.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Silty soil

Sandy soil

Clayey soil

Stratified soil

3.

Which of the following is a measure of particle size range

Uniformity coefficient

Coefficient of curvature

Effective size

None of the above

4.

The biggest size of clay particles is

0.075mm

0.0002mm

0.02mm

0.002mm

5.

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

moist soil

plastic soil

fully saturated soil

hydrated soil

6.

The maximum size of grains of silt soil is about

0.1 mm

0.075 mm

2 mm

0.5 mm

7.

A flat grain size distribution curve shows a

Wide range of grain size

Grain size from two representative fractions

Narrow range of grain size

Uniform grain size

8.

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

9.

As per IS the specific gravity of soil is determined at

27°C

17°C

10°C

47°C

10.

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

1.0-1.1

0.8-0.9

0.6-0.7

0.4-0.5

Page 2 of 5

11.

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

Dry density

Bulk density

Grading

Relative density

12.

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

None of these

Void density

Porosity

Air content

13.

The effective size of a soil is

D10

D40

D20

D30

14.

On adding bitumen to soil

voids get filled

water proofing improves

compaction becomes easy

cohesion of soil increases

15.

Silts have the following property

plasticity

elasticity

no plasticity

limited plasticity

16.

Sieve analysis is used when size of particle is

< 0.075mm

4.75mm

> 0.075mm

0.01mm

17.

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

Moisture content

Capillarity

None of these

Permeability

18.

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

2 mm

1.50 micron

7.5 mm

4.75 mm

19.

The specific gravity of sandy soils is

2.2

2.0

1.5

2.6

20.

The percentage of the porosity of compacted sand is about

15 to 30 %

5 to 15%

40 to 50 %

30 to 40 %

Page 3 of 5

21.

Most suitable method for drainage of fine grained soil is

electro-osmosis method

deep well system

vacuum method

well point system

22.

Undisturbed soil samples are obtained by

Thin walled samples

Direct excavations

Thick walled samples

Augers

23.

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

e= w.S/G

e= w/S.G

e= w.G/S

none of these

24.

Which of the following soils has the finest grains?

Sands

Silts

Fine sands

clays

25.

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

26.

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

27.

'Loess' is silty clay formed by the action of

wind

glacier

gravitational force

water

28.

Uniformity coefficient of soil is

<=1

<1

>1

=1

29.

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 hardening

Strain softening

30.

The soil transported by flowing water is called

marine soil

alluvial soil

aeolian soil

lacustrine soil

Page 4 of 5

31.

Clay is generally

none of these

permeable

having large particle size

cohesive

32.

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

poorly graded soil

well graded soil

uniformly graded soil

none of these

33.

The soil transported by wind is called

lacustrine soil

marine soil

alluvial soil

aeolian soil

34.

Non-cohesive soil is

clay

none of these

silt

sand

35.

The minimum size of grains of silt soil is about

0.3 mm

0.06 mm

0.01 mm

0.002 mm

36.

The IS classification of soils is

Highway research board classification

Textural classification

Particles size classification

Modified unified classification

37.

The friction offered by sand is equal to

Sliding friction

Resistance due to interlocking

Rolling friction

All of the above

38.

Darcy's law is not applicable for flow in

gravels

clays

silts

fine sands

39.

Stokes law is valid only if the size of particle is

> 0.2mm

Between 0.2mm and 0.0002mm

< 0.0002mm

All of the above

40.

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

Porosity

Void ratio

Void fraction

Solid ratio

Page 5 of 5

41.

Sedimentation analysis is used when size of particle is

> 0.75mm

0.01mm

4.75mm

< 0.075mm

42.

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

Degree of saturation

Unit weight of water

Density

Moisture content

43.

'Talus' is the soil transported by

wind

water

glacier

gravitational force

44.

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

Dense sand

Bentonite

Organic clay

Stiff clay

45.

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

Loose sand

Stiff clay

Dense sand

Bentonite

46.

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

Zero-air voids line

Azimuth

Geotechnical Engineering MCQs Set-1

Related

Leave a ReplyCancel reply

Secured Payments

Protection

Geotechnical Engineering MCQs Set-1

Share this Now with Friends:

Related

Leave a ReplyCancel reply

Secured Payments

Protection