Geotechnical Engineering Questions and Answers – Unified Soil Classification

This set of Geotechnical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Unified Soil Classification”.

1. Unified soil classification system (USCS) was developed by ____________
a) Kozney
b) Atterberg
c) Casagrande
d) Rankine
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2. The USCS system was used for which of the following purpose during World War 2?
a) Air field construction
b) Dam construction
c) Foundation
d) Earth slopes
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3. According to USCS, the fined grained soil are classified on the basis of _____________
a) Plasticity
b) Grain size distribution
c) Group index
d) Particle size composition
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4. By USCS system, soil are classified in to ___________ Major groups.
a) 2
b) 5
c) 6
d) 4
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5. A soil is considered as coarse grained, if it retains more than ___________ in a sieve.
a) 90% of the soil
b) 70% of the soil
c) 50% of the soil
d) 20% of the soil
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6. Coarse grained soils, containing fines between 5-12%, are designated by ___________ Symbol.
a) GW-GM and SP-SM
b) CL-ML
c) None of the mentioned
d) All of the mentioned
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7. Fine grained soil are sub divided in to ___________
a) Silt and clay
b) Sand and clay
c) Organic and silt
d) Gravel and peat
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8. Fine grained soil are subdivided based on ___________
a) Liquid limit and Plasticity index
b) Group Index
c) None of the mentioned
d) All of the mentioned
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9. Coarse grained soil is sub-divided in to _______________
a) Gravel and clay
b) Gravel and sand
c) Sand and silt
d) Silt and clay
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10. In Casagrande’s plasticity chart, the numbers in the chart denotes ____________
a) Relative suitability
b) Grade of the soil
c) Division of the group
d) None of the mentioned
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Sanfoundry Global Education & Learning Series – Geotechnical Engineering.

To practice all areas of Geotechnical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.