Soil Mechanics and Foundation
Coefficient of consolidation for clays normally

increases with increase in liquid limit
first increases and then decreases with increase in liquid limit
remains constant at all liquid limits
decreases with increase in liquid limit

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Soil Mechanics and Foundation
Coefficient of compressibility is

different for different types of soils and also different for a soil under different states of consolidation
independent of type of soil but depends on the stress history of soil
different for different types of soils but same for a soil under different states of consolidation
constant for any type of soil

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

optimum water content decreases but maximum dry density increases
both optimum water content and maximum dry density increase
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 increase in pore water pressure and total stress
Equal decrease in pore water pressure and total stress
Increase in pore water pressure but decrease in total stress
Decrease in pore water pressure but increase in total stress

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