ExamVeda
Login
Home

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.

1
What does the term "soil compaction" refer to in soil mechanics?
Discuss
Answer & Solution
Answer: Option B
Solution:
Soil compaction is the process of reducing air voids in soil by mechanical means such as rolling or tamping.This increases soil strength and stability.It is essential in construction to ensure foundation reliability.
2
The Atterberg limits are used to describe:
Discuss
Answer & Solution
Answer: Option C
Solution:
Atterberg limits are basic measures of the critical water contents of fine-grained soils.They include liquid limit, plastic limit, and shrinkage limit.These values help classify and predict soil behavior.
3
The effective stress principle in soil mechanics was proposed by:
Discuss
Answer & Solution
Answer: Option B
Solution:
Terzaghi introduced the effective stress principle, which states:Total stress = Effective stress + Pore water pressure.Effective stress governs soil strength and deformation.
4
Which soil property primarily influences the rate of consolidation?
Discuss
Answer & Solution
Answer: Option B
Solution:
Permeability is the key factor controlling how fast pore water can escape from soil during consolidation.Low permeability soils consolidate slowly.
5
The standard tool for determining the liquid limit of soil is:
Discuss
Answer & Solution
Answer: Option A
Solution:
The Casagrande apparatus is used to determine the liquid limit of a fine-grained soil.It measures the water content at which soil starts to flow.
6
What is the term for water held tightly around soil particles?
Discuss
Answer & Solution
Answer: Option B
Solution:
Hygroscopic water forms a thin layer around soil particles due to adhesion forces.It is unavailable to plants and cannot be removed by drying at room temperature.
7
Which type of soil shows high plasticity?
Discuss
Answer & Solution
Answer: Option C
Solution:
Clay particles are very small and have high surface area.They retain water and demonstrate significant plastic behavior when wet.
8
The permeability of a soil depends on:
Discuss
Answer & Solution
Answer: Option D
Solution:
Permeability is influenced by grain size, void ratio, and saturation. Larger particles and higher saturation lead to greater permeability.
9
The coefficient of permeability is measured using:
Discuss
Answer & Solution
Answer: Option C
Solution:
The constant head and falling head tests are used to determine soil permeability. These tests are chosen based on the permeability range of the soil.
10
Which factor does NOT affect soil shear strength?
Discuss
Answer & Solution
Answer: Option D
Solution:
Color of soil is a physical appearance trait and has no effect on shear strength. Shear strength depends on cohesion, friction angle, and water content.