Soil Mechanics and Foundation
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in

All of these
the method of taking observations
the principle of test
the method of preparation of soil suspension

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Soil Mechanics and Foundation
Coefficient of earth pressure at rest is

greater than both the active earth pressure and passive earth pressure
greater than active earth pressure but less than passive earth pressure
less than active earth pressure but greater than passive earth pressure
less than both the active and passive earth pressures

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