# Geotechnical Engineer MCQs

## Geotechnical engineer MCQs

The time of settlement of coarse particle of the soil sample is_____ if it has 0.5 diameter.

If we take Î³=0.905D2 and 5 m as the height of the water tank.

(A). Â 22.1 seconds

(B). Â 72.8 seconds

(C). Â 14 seconds

(D). Â 11.6 seconds

(E). Â none of these

What is the size distribution curve, if the curve is situated at the right side of the particle?

(A). Â Coarse-grained soil

(B). Â coarse-grained soil

(C). Â Fine-grained soil

(D). Â None of the mentioned

(E). Â none of these

What is the equation of the shape of particle size curve that is represented by the coefficient of curvature (C(C). ?

(A). Â Cc = (D30)2/D10Ã—D60

(B). Â Cc = (D40)2/D10Ã—D30

(C). Â Cc = (D30)2/D10Ã—D40

(D). Â Cc = D60/D10

(E). Â none of these

Which of the following is the ratio of the coefficient of uniformity (CV)?

(A). Â D10 and D30

(B). Â D30 and D10

(C). Â D60 and D10

(D). Â D10 and D30

(E). Â none of these

How the soil is treated to remove organic matter in it, in the pipette method of sedimentation analysis?

(A). Â Hydrogen peroxide

(B). Â Sodium oxalate

(C). Â Hydrochloric acid

(D). Â Sodium silicate

(E). Â none of these

Where the water outlet is present in the pipette analysis apparatus?

(A). Â Top

(B). Â Bottom

(C). Â Middle

(D). Â Slightly above the bottom

(E). Â none of these

As a standard sedimentation method in a laboratory, what method is used?

(A). Â Pipette method

(B). Â Hydrometer method

(C). Â Sedimentation analysis method

(D). Â Sand replacement method

(E). Â none of these

Dispersing agents that are added to the soil in the pipette method are referred to what?

(A). Â Mechanical agent

(B). Â Calgon

(C). Â Deflocculating agent

(D). Â None of the mentioned

(E). Â none of these

What is the process of removal of the organic matter and the calcium compounds in the dispersion method?

(A). Â Evaporation

(B). Â Sedimentation

(C). Â Pretreatment

(D). Â None of the mentioned

(E). Â none of these

For drainage in pipette analysis, what is the recommended time?

(A). Â 1,8,16,24 min

(B). Â 2,4,6,12,20 and 30 min

(C). Â 1/2,1,2,4,8,15, and 30 min

(D). Â 24,30,34,40,46 min

(E). Â none of these

Using the pipette method for the sedimentation analysis what is not its disadvantage?

(A). Â The apparatus is very simple

(B). Â The method of process is simple

(C). Â It requires more time

(D). Â Requires very accurate weight

(E). Â none of these

What canâ€™t be used as a dispersing agent?

(A). Â Sodium oxalate

(B). Â Sodium oxide

(C). Â Sodium silicate

(D). Â Sodium polyphosphate

(E). Â none of these

How the dispersing agents in soil particles act?

(A). Â Soluble agent

(B). Â Separating agent

(C). Â Cementing agent

(D). Â Deflocculating agent

(E). Â none of these

The poise is equal to what?

(A). Â 0.5 NS/m2

(B). Â 0.8 NS/ m2

(C). Â 10-4 K NS/ m2

(D). Â 0.1 NS/ m2

(E). Â none of these

What do we take the unit weight of water in v=(2/g)r2(Vs-Vw/É³)?

(A). Â 0.981 kn/m2

(B). Â 98.1 n/m2

(C). Â 9.81 kn/m2

(D). Â 9.81 n/m3

(E). Â none of these

How the sedimentation analysis is done?

(A). Â Sieve

(B). Â Hydrometer and Pipette

(C). Â All of the mentioned

(D). Â None of the mentioned

(E). Â none of these

What is the time for a particle to settle, of 0.06 diameter at the height of 10 cm?

(A). Â 42 m 59 s

(B). Â 25.8 s

(C). Â 3 m 52 s

(D). Â 42.8 s

(E). Â none of these

What is the Sodium hexametaphosphate used in soil suspension called?

(A). Â Deflocculating agent

(B). Â Aggregate

(C). Â Calgon

(D). Â None of the mentioned

(E). Â none of these

What is the volume (or) capacity of the boiling tube taken in the pipette method?

(A). Â 750 ml

(B). Â 1000 ml

(C). Â 800 ml

(D). Â 500 ml

(E). Â none of these

What is the volume of suspension taken in the hydrometer test?

(A). Â 500

(B). Â 120

(C). Â 100

(D). Â 1000

(E). Â none of these

In which terms, the volume of the hydrometer is taken initially?

(A). Â Liters

(B). Â Millimeters

(C). Â Grams

(D). Â All of the mentioned

(E). Â none of these

How the reduced reading are designated In the calibration of hydrometer reading?

(A). Â RS

(B). Â RL

(C). Â RR

(D). Â RH

(E). Â none of these

What is the corrected hydrometer reading for the meniscus?

(A). Â R=Rhâ€™ + Cm

(B). Â R=Rhâ€™ + C

(C). Â R=Rhâ€™+ Cm Â± CL â€“ Cd

(D). Â None of the mentioned

(E). Â none of these

Which of the following filter type is provided at the bottom of drainage sumps and the trenches?

(A). Â Drainage filter

(B). Â Reverse filter

(C). Â Horizontal filter

(D). Â Weighting filter

(E). Â none of these

What is the protective filter called?

(A). Â Horizontal filter

(B). Â Reverse filter and Inverted filter

(C). Â None of the mentioned

(D). Â All of the mentioned

(E). Â none of these

What soil to be protected by a protective filter is said?

(A). Â Pervious materials

(B). Â Protective materials

(C). Â Porous materials

(D). Â Base material

(E). Â none of these

How the filter material should be to prevent the buildup of seepage forces within the filter?

(A). Â Finer

(B). Â Coarse and Pervious

(C). Â None of the mentioned

(D). Â All of the mentioned

(E). Â none of these

Of what layers does the protective filter consists?

(A). Â Base material

(B). Â Sheet-pile

(C). Â Filter material

(D). Â Pervious material

(E). Â none of these

Which organization devised the requirements to be satisfied by the filter material?

(A). Â M.I.T system

(B). Â Indian standard classification

(C). Â PRA system

(D). Â U.S.B.R. Earth manual

(E). Â none of these

For providing what the protective filter is designed?

(A). Â Soil erosion

(B). Â Water moisture

(C). Â Quick drainage

(D). Â All of the mentioned

(E). Â none of these

What can keep the phreatic line of an earth dam within the body of the dam?

(A). Â Proper drainage filter

(B). Â Increasing surface area

(C). Â Increasing soil porosity

(D). Â Providing a protective filter

(E). Â none of these

To what the grain-size curve of a filter should be parallel?

(A). Â Seepage discharge

(B). Â Filter

(C). Â Base materials

(D). Â All of the mentioned

(E). Â none of these

D15 size material is always more than the size of _____ according to the Terzaghi

(A). Â D85

(B). Â D40

(C). Â D20

(D). Â D10

(E). Â none of these