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
decreases with increase in liquid limit
remains constant at all liquid limits

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Soil Mechanics and Foundation
In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as

consolidated drained test
unconsolidated drained test
consolidated undrained test
unconsolidated undrained test

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