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Rock Mechanics and Rock Engineering MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Rock Mechanics and Rock Engineering. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Rock Mechanics and Rock Engineering chapter is particularly important for students studying Geological engineering. Page-1 section-2

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
1
Which test helps determine the durability of rocks under wetting and drying cycles?
Discuss
Answer & Solution
Answer: Option A
Solution:
The slake durability test assesses rock�s resistance to disintegration when subjected to cycles of wetting and drying.
2
Which of the following is NOT a type of rock failure?
Discuss
Answer & Solution
Answer: Option D
Solution:
Plastic deformation failure is a mode of deformation, not a failure mode.Failure usually refers to brittle or ductile fracture.
3
What is the main objective of a rock mechanics study in tunneling?
Discuss
Answer & Solution
Answer: Option B
Solution:
The main goal is to assess rock mass stability to design safe tunnels and support systems.
4
What type of rock discontinuity is characterized by smooth, planar surfaces?
Discuss
Answer & Solution
Answer: Option B
Solution:
Joints are fractures without significant displacement, typically smooth and planar, affecting rock strength.
5
Which factor influences the stress distribution around an underground excavation?
Discuss
Answer & Solution
Answer: Option A
Solution:
The shape of excavation significantly affects how stresses concentrate and redistribute around underground openings.
6
What does the Uniaxial Compressive Strength (UCS) test measure in rock mechanics?
Discuss
Answer & Solution
Answer: Option B
Solution:
UCS test measures the maximum axial compressive stress that a rock sample can withstand before failure.This is a fundamental strength parameter in rock mechanics.
7
Which term describes the gradual movement of rock or soil downslope under the influence of gravity?
Discuss
Answer & Solution
Answer: Option B
Solution:
Creep is the slow, gradual, and continuous downslope movement of soil or rock material.It occurs over long periods and is often imperceptible daily.
8
The "Rock Quality Designation (RQD)" is expressed as a percentage of:
Discuss
Answer & Solution
Answer: Option B
Solution:
RQD is the percentage of intact core pieces longer than 10 cm in length.It is a widely used indicator of rock mass quality.
9
Which type of stress is primarily responsible for the formation of shear zones in rocks?
Discuss
Answer & Solution
Answer: Option C
Solution:
Shear stress causes rocks to deform by sliding along planes, forming shear zones.
10
What is the primary effect of water infiltration in fractured rock masses?
Discuss
Answer & Solution
Answer: Option B
Solution:
Water infiltration can reduce rock strength by lubrication of fractures and inducing chemical weathering.This often leads to slope failure or tunnel instability.