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

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

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Soil Mechanics and Foundation
If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then

The liquid limit of soil always decreases
The liquid limit of soil may decrease
The liquid limit of soil always increases
The liquid limit of soil may increase

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