USCS with Zahid

1. Which of the following is NOT an Atterberg limit?

• Liquid Limit

• Plastic Limit

• Compaction Limit

• Shrinkage Limit

2. 2. What does the liquid limit (LL) of soil represent?

• The moisture content at which soil changes from plastic to liquid state

• The moisture content at which soil changes from semi-solid to plastic state

• The moisture content at which soil starts to shrink

• The maximum water content a soil can hold

3. The difference between the liquid limit and plastic limit is called:

• Shrinkage Index

• Plasticity Index

• Consistency Index

• Activity Index

4. Which device is commonly used to determine the liquid limit of soil?

• Proctor compaction mold

• Hydrometer

• Casagrande apparatus

• Penetrometer

5. A soil with a high plasticity index (PI) indicates:

• Low clay content and low compressibility

• High sand content and low shear strength

• Low silt content and high permeability

• High clay content and high plasticity

6. What is the purpose of a sieve analysis test?

• To determine the moisture content of soil

• To classify soil based on grain size distribution

• To measure soil permeability

• To determine the Atterberg limits of soil

7. Which sieve size is commonly used to separate coarse-grained soils from fine-grained soils in the Unified Soil Classification System (USCS)?

• No. 10 (2.00 mm)

• No. 40 (0.425 mm)

• No. 4 (4.75 mm)

• No. 200 (0.075 mm)

8. What does the term "percent passing" in sieve analysis represent?

• The percentage of soil particles passing through a sieve

• The percentage of soil particles retained on a sieve

• The weight of soil particles retained on each sieve

• The total weight of the sample used in the test

9. Which type of graph is typically used to present sieve analysis results?

• Stress-strain curve

• Mohr's circle

• Particle size distribution curve

• Consolidation curve

10. What is the standard duration for mechanical shaking in a sieve analysis test according to ASTM procedures?

• 2 minutes

• 10 minutes

• 15 minutes

• 30 minutes