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Engineering Geology for Construction MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Engineering Geology for Construction. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Engineering Geology for Construction chapter is particularly important for students studying Geological engineering. Page-6 section-1

Each section contains 100 MCQs on Engineering Geology for Construction .
51
What technique is used to reduce water seepage in dam foundations?
Discuss
Answer & Solution
Answer: Option C
Solution:
Grouting involves injecting materials into voids and fractures to block seepage paths and increase foundation stability.
52
Which parameter is most important in assessing a site for landslide risk?
Discuss
Answer & Solution
Answer: Option C
Solution:
Slope angle determines the gravitational force acting on soil or rock masses and directly affects landslide susceptibility.
53
In tunnel design, which rock property is most relevant?
Discuss
Answer & Solution
Answer: Option B
Solution:
RQD (Rock Quality Designation) quantifies rock mass quality and helps predict excavation difficulty and support needs.
54
What is the likely issue when constructing over a karst terrain?
Discuss
Answer & Solution
Answer: Option C
Solution:
Karst terrains are formed in limestone and may contain voids or underground drainage systems, leading to sinkholes.
55
Which method improves bearing capacity of loose sandy soils?
Discuss
Answer & Solution
Answer: Option C
Solution:
Compaction densifies soil, reducing voids and improving its load-bearing capacity. It is commonly used for sandy soils.
56
Why are unweathered rocks preferred for foundation support?
Discuss
Answer & Solution
Answer: Option C
Solution:
Unweathered rocks retain their original strength and structure, offering superior support for engineering loads.
57
Which of the following causes undercutting of slopes in natural terrain?
Discuss
Answer & Solution
Answer: Option C
Solution:
River erosion at the base of a slope removes support and may trigger slope failure through undercutting.
58
What does a borehole log provide in site investigation?
Discuss
Answer & Solution
Answer: Option C
Solution:
A borehole log is a record of the geological formations encountered during drilling, useful for understanding subsurface conditions.
59
Which property of soil is critical for assessing liquefaction potential?
Discuss
Answer & Solution
Answer: Option D
Solution:
Density (especially relative density in sands) affects how likely soil is to lose strength and stiffness during seismic shaking, leading to liquefaction.
60
Which test is commonly used to assess shear strength of rock?
Discuss
Answer & Solution
Answer: Option D
Solution:
The triaxial test allows measurement of shear strength parameters in controlled stress conditions for both soils and rocks.