Civil Engineering MCQs

Page No. 248

If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in______________?


aliquid state

✖


bplastic state

✓


cemi-solid state

✖


dsolid state

✖


View Answer plastic state

Toughness index is defined as the ratio of____________________?


aplasticity index to consistency index

✖


bplasticity index to flow index

✓


cliquidity index to flow index

✖


d consistency index to liquidity index

✖



At liquid limit, all soils possess________________?


asame shear strength of small magnitude

✓


b same shear strength of large magnitude

✖


cdifferent shear strengths of small magnitude

✖


ddifferent shear strengths of large magnitude

✖



The water content of soil, which represents the boundary between plastic state and liquid state, is known as_________________?


aliquid limit

✓


bplastic limit

✖


cshrinkage limit

✖


dplasticity index

✖


View Answer liquid limit

The admixture of coarser particles like sand or silt to clay causes______________?


adecrease in liquid limit and increase in plasticity index

✖


b decrease in liquid limit and no change in plasticity index

✖


cdecrease in both liquid limit and plasticity index

✓


dincrease in both liquid limit and plasticity index

✖



When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as_____________?


anegative

✖


bzero

✓


cnon-plastic (NP)

✖


d 1

✖


View Answer zero

If the plasticity index of a soil mass is zero, the soil is______________?


asand

✓


bsilt

✖


cclay

✖


d clayey silt

✖


View Answer sand

According to Atterberg, the soil is said to be of medium plasticity if the plasticity index PI is____________?


a0 < PI < 7

✖


b. 7

✓


c17

✖


d0

✖


View Answer 7

The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in_____________?


athe principle of test

✖


bthe method of taking observations

✓


cthe method of preparation of soil suspension

✖


dall of the above

✖



Uniformity coefficient of a soil is__________________?


aalways less than 1

✖


b always equal to 1

✖


cequal to or less than 1

✖


dequal to or gi eater than 1

✓



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