Soil Mechanics and Foundation
Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively.If other things remain constant, the coefficient of permeability

increases by 33.3%
increases by 50%
increases by 25%
decreases by 33.3%

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Soil Mechanics and Foundation
The admixture of coarser particles like sand or silt to clay causes

increase in both liquid limit and plasticity index
decrease in liquid limit and increase in plasticity index
decrease in liquid limit and no change in plasticity index
decrease in both liquid limit and plasticity index

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Soil Mechanics and Foundation
With the increase in the amount of compaction energy

both optimum water content and maximum dry density increase
optimum water content decreases but maximum dry density increases
optimum water content increases but maximum dry density decreases
both optimum water content and maximum dry density decrease[ES 93]

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Soil Mechanics and Foundation
Rise of water table above the ground surface causes

Equal decrease in pore water pressure and total stress
Decrease in pore water pressure but increase in total stress
Increase in pore water pressure but decrease in total stress
Equal increase in pore water pressure and total stress

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