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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-2 section-1

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
11
Which property is measured using a Schmidt hammer?
Discuss
Answer & Solution
Answer: Option B
Solution:
A Schmidt hammer gives a rebound value that indicates the surface hardness of rock, useful for preliminary site investigation.
12
What does a high Poisson�s ratio in rock indicate?
Discuss
Answer & Solution
Answer: Option B
Solution:
A high Poisson�s ratio means the rock deforms significantly in lateral directions under axial stress, indicating higher compressibility.
13
Rock bolting is primarily used for:
Discuss
Answer & Solution
Answer: Option D
Solution:
Rock bolting is a reinforcement technique used to stabilize rock excavations by transferring load from unstable to stable rock.
14
The deformation modulus of rock mass is:
Discuss
Answer & Solution
Answer: Option A
Solution:
Due to jointing and discontinuities, the deformation modulus of rock mass is usually much lower than that of intact rock.
15
Which parameter does NOT influence rock slope stability?
Discuss
Answer & Solution
Answer: Option D
Solution:
Surface color is not a factor in slope stability.Joint orientation, weathering, and water infiltration are critical.
16
What is the primary cause of rock bursts in deep tunnels?
Discuss
Answer & Solution
Answer: Option D
Solution:
Rock bursts are sudden, violent failures of rock, mainly due to the release of high in-situ stress in deep tunnels.These are common in hard, brittle rocks.
17
The term �creep� in rock mechanics refers to:
Discuss
Answer & Solution
Answer: Option C
Solution:
Creep is the slow, time-dependent deformation of rock under constant stress, important in tunnel stability and dam foundations.
18
Which type of failure is common in heavily jointed rock masses?
Discuss
Answer & Solution
Answer: Option C
Solution:
In jointed rocks, blocky failure occurs due to the movement of rock blocks along joints or discontinuities.This contrasts with intact rock failure.
19
What is the unit of Rock Mass Rating (RMR)?
Discuss
Answer & Solution
Answer: Option B
Solution:
RMR is a dimensionless rating system (no units), typically ranging from 0 to 100, used to classify rock mass quality.
20
Which type of stress is usually most responsible for tensile cracking in rocks?
Discuss
Answer & Solution
Answer: Option D
Solution:
Tensile stress causes rocks to crack when the stress exceeds their low tensile strength.Rocks are much weaker in tension than in compression.