Soil Mechanics and Foundation
Degree of consolidation is

directly proportional to time and inversely proportional to drainage path
directly proportional to drainage path and inversely proportional to time
directly proportional to time and inversely proportional to square of drainage path
directly proportional to square of drainage path and inversely proportional to time

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Soil Mechanics and Foundation
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

The liquid limit of soil always increases
The liquid limit of soil always decreases
The liquid limit of soil may decrease
The liquid limit of soil may increase

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

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