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

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

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Soil Mechanics and Foundation
The average coefficient of permeability of natural deposits

Parallel to stratification is always greater than that perpendicular to stratification
Parallel to stratification is always less than that perpendicular to stratification
Parallel to stratification may or may not be greater than that perpendicular to stratification
Is always same in both directions

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