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Soil Mechanics MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Soil Mechanics. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Soil Mechanics chapter is particularly important for students studying Geological engineering. Page-5 section-1

41
The consistency of soil is most affected by:
Discuss
Answer & Solution
Answer: Option B
Solution:
Clay content strongly influences soil consistency due to its plastic and cohesive behavior with changing moisture.
42
Which of the following is a time-dependent settlement?
Discuss
Answer & Solution
Answer: Option B
Solution:
Primary consolidation occurs over time as pore water is expelled from soil under load, especially in saturated clays.
43
The degree of saturation is defined as:
Discuss
Answer & Solution
Answer: Option B
Solution:
Degree of saturation = Volume of water / Volume of voidsIt describes how much of the soil's void space is filled with water.
44
The permeability of soil primarily depends on:
Discuss
Answer & Solution
Answer: Option C
Solution:
Permeability depends on the void ratio and particle size�larger particles and higher voids lead to higher permeability.
45
The ratio of weight of water to the weight of solids in a soil mass is called:
Discuss
Answer & Solution
Answer: Option B
Solution:
Water content (w) is defined as the weight of water divided by the weight of solids in a soil sample.It's a key parameter in compaction and strength studies.
46
What is the specific gravity of most inorganic soils?
Discuss
Answer & Solution
Answer: Option C
Solution:
Specific gravity refers to the ratio of the density of soil solids to the density of water.For most inorganic soils, it ranges from 2.6 to 2.8, indicating mineral composition.
47
The unconfined compression test is mainly used for:
Discuss
Answer & Solution
Answer: Option C
Solution:
The unconfined compression test is suitable for cohesive soils like clays, where lateral support is not needed due to their cohesion.
48
Which soil property influences slope failure the most?
Discuss
Answer & Solution
Answer: Option C
Solution:
Shear strength determines a soil's resistance to sliding or collapsing on slopes.Low shear strength can lead to slope instability or failure.
49
The term "plasticity" in soils refers to:
Discuss
Answer & Solution
Answer: Option D
Solution:
Plasticity is the property that allows soil to deform without cracking or breaking under stress when moist.It's significant in fine-grained soils.
50
Which is NOT a type of soil structure?
Discuss
Answer & Solution
Answer: Option C
Solution:
Crystalline structure is associated with minerals and rocks, not soils.Flocculated, dispersed, and honeycomb are typical arrangements of soil particles.