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

fully saturated soil

moist soil

hydrated soil

plastic soil

2.

The maximum size of grains of silt soil is about

0.075 mm

2 mm

0.5 mm

0.1 mm

3.

The IS classification of soils is

Textural classification

Modified unified classification

Highway research board classification

Particles size classification

4.

Which of the following soils has the finest grains?

Fine sands

clays

Sands

Silts

5.

Non-cohesive soil is

clay

none of these

silt

sand

6.

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

7.

'Talus' is the soil transported by

wind

water

gravitational force

glacier

8.

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

Void ratio

Void fraction

Porosity

Solid ratio

9.

As per IS the specific gravity of soil is determined at

47°C

10°C

27°C

17°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 soil transported by flowing water is called

aeolian soil

lacustrine soil

alluvial soil

marine soil

12.

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

Clay, silt, sand, colloids

Silt, sand, colloids, clay

Sand, silt, clay, colloids

Sand, silt, colloids, clay

13.

Clay is generally

none of these

permeable

cohesive

having large particle size

14.

Darcy's law is not applicable for flow in

gravels

clays

fine sands

silts

15.

The minimum size of grains of silt soil is about

0.01 mm

0.3 mm

0.06 mm

0.002 mm

16.

Uniformity coefficient of soil is

=1

>1

<1

<=1

17.

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

Strain softening

Plasticity

Strain hardening

Yielding

18.

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

19.

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

20.

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

Constant density line

Azimuth

Proctor curve

Page 3 of 5

21.

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

Bentonite

Dense sand

Stiff clay

Organic clay

22.

Westergaards analysis for stress distribution beneath loaded area is applicable to

Silty soil

Clayey soil

Sandy soil

Stratified soil

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

none of these

e= w.G/S

e= w/S.G

24.

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

25.

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

Bentonite

Dense sand

Loose sand

Stiff clay

26.

Which of the following is a measure of particle size range

Uniformity coefficient

Effective size

Coefficient of curvature

None of the above

27.

Sieve analysis is used when size of particle is

< 0.075mm

4.75mm

0.01mm

> 0.075mm

28.

The soil transported by wind is called

marine soil

aeolian soil

lacustrine soil

alluvial soil

29.

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

Grading

Relative density

Bulk density

Dry density

30.

Most suitable method for drainage of fine grained soil is

deep well system

electro-osmosis method

well point system

vacuum method

Page 4 of 5

31.

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

Permeability

Moisture content

None of these

Capillarity

32.

The specific gravity of sandy soils is

2.6

2.2

2.0

1.5

33.

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

Air content

Void density

Porosity

None of these

34.

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

Density

Moisture content

Degree of saturation

Unit weight of water

35.

'Loess' is silty clay formed by the action of

gravitational force

water

glacier

wind

36.

Sedimentation analysis is used when size of particle is

< 0.075mm

4.75mm

> 0.75mm

0.01mm

37.

Silts have the following property

limited plasticity

elasticity

no plasticity

plasticity

38.

On adding bitumen to soil

cohesion of soil increases

compaction becomes easy

voids get filled

water proofing improves

39.

Group index of soil ranges such that

0 <= GI <=20

0 < GI < 20

0 <= GI <=25

0 < GI < ∞

40.

Undisturbed soil samples are obtained by

Thin walled samples

Thick walled samples

Augers

Direct excavations

Page 5 of 5

41.

A flat grain size distribution curve shows a

Grain size from two representative fractions

Uniform grain size

Wide range of grain size

Narrow range of grain size

42.

The effective size of a soil is

D40

D20

D10

D30

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

aeolian soil

Colluvial soil

loess

44.

The percentage of the porosity of compacted sand is about

15 to 30 %

30 to 40 %

5 to 15%

40 to 50 %

45.

The biggest size of clay particles is

0.02mm

0.002mm

0.075mm

0.0002mm

46.

The friction offered by sand is equal to

Rolling friction

All of the above

Resistance due to interlocking

Sliding friction

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