Soil Mechanics and Foundation
The maximum dry density upto which any soil can be compacted depends upon

both moisture content and amount of compaction energy
moisture content only
amount of compaction energy only
None of these

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Soil Mechanics and Foundation
If the water table rises upto ground surface, then the

effective stress is reduced due to decrease in total stress only but pore water pressure does not change
effective stress is reduced due to increase in pore water pressure only but total stress does not change
total stress is increased due to decrease in pore water pressure but effective stress does not change
total stress is reduced due to increase in pore water pressure only but effective stress does not change

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