Civil Engineering MCQs

Page No. 247

Highway Research Board (HRB) classification of soils is based on__________________?


aparticle size composition

✖


b plasticity characteristics

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cboth particle size composition and plasticity characteristics

✓


dnone of the above

✖



Rise of water table above the ground surface causes________________?


aequal increase in pore water pressure and total stress

✓


b equal decrease in pore water pressure and total stress

✖


cincrease in pore water pressure but decrease in total stress

✖


ddecrease in pore water pressure but increase in total stress

✖



Quick sand is a________________?


a type of sand

✓


bflow condition occurring in cohesive soils

✖


cflow condition occurring in cohesionless soils

✖


dflow condition occurring in both cohesive and cohesionless soils

✖


View Answer type of sand

The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively__________________?


azero and zero

✖


b0.5 kg/cm2 and zero

✓


c0.5 kg/cm2 and 0.5 kg/cm2

✖


d1.0 kg/cm2 and 0.5 kg/cm2

✖


View Answer 0.5 kg/cm2 and zero

The clay mineral with the largest swelling and shrinkage characteristics is_______________?


akaolinite

✖


b illite

✖


cmontmorillonite

✓


d none of the above

✖


View Answer montmorillonite

Sand particles are made of________________?


arock minerals

✓


bkaolinite

✖


cillite

✖


dmontmorillonite

✖


View Answer rock minerals

Dispersed type of soil structure is an arrangement comprising particles having______________?


aface to face or parallel orientation

✓


b edge to edge orientation

✖


c edge to face orientation

✖


dall of the above

✖



Inorganic soils with low compressibility are represented by_________________?


aMH

✖


bSL

✖


c ML

✓


dCH

✖


View Answer ML

If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then______________?


athe liquid limit of soil always increases

✓


bthe liquid limit of soil always decreases

✖


cthe liquid limit of soil may increase

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dthe liquid limit of soil may decrease

✖



Which of the following soils has more plasticity index ?


asand

✖


bsilt

✖


cclay

✓


dgravel

✖


View Answer clay

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