Soil Mechanics and Foundation
Hydrometer readings are corrected for:

Temperature, meniscus and dispersing agent corrections
Dispersing agent correction
Temperature correction
Meniscus correction

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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

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

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