Geotechnical Engineering MCQs Set-3

21. When the degree of saturation is zero, the soil mass under consideration represents

three phase system

one phase system

two phase system with soil and water

two phase system with soil and air

22. A combined footing is generally used when

number of columns is more than two and they are spaced far apart

number of columns is two and they are spaced far apart

there is only one column

number of columns is two and they are spaced close to each other

23. Effective stress on soil

decreases both voids ratio and permeability

decreases voids ratio and increases permeability

increases both voids ratio and permeability

increases voids ratio and decreases permeability

24. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear

first increases and then decreases

decreases

increases

remains unchanged

25. Compressibility of sandy soils is

much less than that of clayey soils

none of these

much greater than that of clayey soils

almost equal to that of clayey soils

26. Dispersed type of soil structure is an arrangement comprising particles having

edge to edge orientation

all of these

edge to face orientation

face to face or parallel orientation

27. Coefficient of consolidation for clays normally

increases with increase in liquid limit

remains constant at all liquid limits

first increases and then decreases with increase in liquid limit

decreases with increase in liquid limit

28. The admixture of coarser particles like sand or silt to clay causes

decrease in both liquid limit and plasticity index

decrease in liquid limit and no change in plasticity index

increase in both liquid limit and plasticity index

decrease in liquid limit and increase in plasticity index

29. The value of compression index for a remoulded sample whose liquid limit is 50% is

0.028

0.28

0.36

0.036

30. Coefficient of earth pressure at rest is

less than both the active and passive earth pressures

greater than both the active pressure and passive earth pressure

greater than active earth pressure but less than passive earth pressure

less than active pressure but greater than passive earth pressure

Geotechnical Engineering MCQs Set-3

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