What is soil classification used for?
A Soil compaction
B Soil color determination
C Soil texture and behavior analysis
D Soil permeability analysis
What is permeability in soil?
A Soil’s ability to retain moisture
B Soil’s ability to shrink
C Soil’s ability to compact
D Soil’s ability to transmit water
What does consolidation cause in soil?
A Expansion of soil
B Volume reduction under load
C Increase in soil moisture
D Soil swelling
What is the purpose of the shear strength test?
A Measure soil’s ability to resist sliding or failure
B Measure soil density
C Measure resistance to soil erosion
D Determine soil permeability
What does the CBR test measure?
A Soil’s moisture content
B Soil’s compaction
C Soil’s resistance to penetration for road design
D Soil’s shrinkage
What is the main effect of soil erosion?
A Loss of fertile topsoil
B Increased soil strength
C Increased plasticity
D Increased moisture retention
What is the role of geotextiles in construction?
A Improve soil texture
B Prevent soil erosion and reinforce soil layers
C Decrease soil moisture
D Increase permeability
What happens during soil compaction?
A Increase in soil strength and density
B Increase in soil permeability
C Decrease in shear strength
D Decrease in moisture content
What does the Atterberg limits test determine?
A Soil shear strength
B Soil permeability
C Soil plasticity and consistency
D Soil compaction
What is the primary purpose of soil stabilization?
A To reduce soil volume
B To improve soil strength and durability
C To increase plasticity
D To decrease soil moisture
What does effective stress influence in soil?
A Soil permeability
B Soil strength and stability
C Soil shrinkage
D Soil erosion
What is the result of high plasticity in clayey soils?
A Decreased moisture retention
B Greater ability to retain moisture and mold
C Decreased compaction
D Increased permeability
What does the direct shear test measure?
A Soil permeability
B Soil shear strength
C Soil consolidation rate
D Soil plasticity
What does settlement analysis in soil mechanics assess?
A Soil’s moisture retention
B The amount of vertical displacement under load
C Soil texture
D Soil’s plasticity
What is the main cause of soil liquefaction during an earthquake?
A High soil strength
B Low moisture content
C High pore water pressure and shaking
D Low compaction