Soil Mechanics and Foundation
Coefficient of permeability of soil

increases with the increase in temperature
does not depend upon temperature
increases with the decrease in temperature
None of these

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

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Soil Mechanics and Foundation
Effective stress on soil

Decreases voids ratio and increases permeability
Increases both voids ratio and permeability
Decreases both voids ratio and permeability
Increases voids ratio and decreases permeability

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