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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-10 section-1

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
91
The term "rock mass rating (RMR)" is used to:
Discuss
Answer & Solution
Answer: Option B
Solution:
Rock Mass Rating (RMR) is a system to assess rock quality and strength based on parameters like uniaxial compressive strength, joint spacing, and groundwater condition.
92
What is the typical cause of "brittle failure" in rock engineering?
Discuss
Answer & Solution
Answer: Option D
Solution:
Brittle failure typically occurs at high strain rates, where rocks fracture suddenly without plastic deformation.
93
Which parameter is used to measure the toughness of a rock?
Discuss
Answer & Solution
Answer: Option C
Solution:
Fracture toughness indicates a rock�s ability to resist crack propagation, reflecting its toughness.
94
The presence of which mineral commonly causes swelling and weakening in rocks?
Discuss
Answer & Solution
Answer: Option C
Solution:
Clay minerals can absorb water and swell, leading to weakening and instability in rock masses.
95
What does the term "rock anisotropy" mean?
Discuss
Answer & Solution
Answer: Option B
Solution:
Rock anisotropy means that rock properties vary depending on the direction of measurement due to layering, foliation, or joints.
96
The term "caving" in underground excavation refers to:
Discuss
Answer & Solution
Answer: Option A
Solution:
Caving is the intentional or natural collapse of rock in underground excavations used to manage unstable zones.
97
Which method is commonly used for in-situ determination of rock permeability?
Discuss
Answer & Solution
Answer: Option C
Solution:
Pumping tests measure hydraulic properties of rock mass in situ by observing water flow and pressure changes.
98
Which of the following reduces the stability of a rock slope the most?
Discuss
Answer & Solution
Answer: Option D
Solution:
Joints dipping out of the slope face can promote sliding and failure along joint planes, reducing slope stability.
99
The term "spalling" in rock mechanics refers to:
Discuss
Answer & Solution
Answer: Option B
Solution:
Spalling is the process where surface rock layers flake off due to stress relief or weathering effects.
100
Which factor primarily controls the deformability of rock?
Discuss
Answer & Solution
Answer: Option B
Solution:
Rock fabric and mineralogy govern how rocks deform under stress through grain orientation and bonding.