Soil Mechanics and Foundation Engineering Quiz | Soil Mechanics and Foundation Engineering MCQs with Answers

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101 For a loose sand sample and a dense sand sample consolidated to the same effective stress
A ultimate strength is same and also peak strength is same
B ultimate strength is different but peak strength is same
C ultimate strength is same but peak strength of dense sand is greater than that of loose sand
D ultimate strength is same but peak

Answer: ultimate strength is same but peak strength of dense sand is greater than that of loose sand
102 Select the incorrect statement.
A Effective cohesion of a soil can never have a negative value.
B Effective angle of internal friction for coarse grained soils is rarely below 30°.
C Effective angle of internal friction for a soil increases as state of compact-ness increases.
D Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Answer: Effective cohesion of a soil can never have a negative value.
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103 For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as
A dry of OMC and wet of OMC
B wet of OMC and dry of OMC
C wet of OMC and wet of OMC
D dry of OMC and dry of OMC where OMC is optimum moisture content

Answer: wet of OMC and dry of OMC
104 The maximum dry density upto which any soil can be compacted depends upon
A moisture content only
B amount of compaction energy only
C both moisture content and amount of compaction energy
D none of the above

Answer: both moisture content and amount of compaction energy
105 Coefficient of earth pressure at rest is
A less than active earth pressure but greater than passive earth pressure
B greater than active earth pressure but less than passive earth pressure
C greater than both the active earth pressure and passive earth pressure
D less than both the active and passive earth pressures

Answer: greater than active earth pressure but less than passive earth pressure

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