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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-3 section-2

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
21
Which rock property measures resistance to surface indentation?
Discuss
Answer & Solution
Answer: Option A
Solution:
Hardness indicates the resistance of rock surface to scratching or indentation, often measured by Mohs scale.
22
What type of failure occurs along a curved slip surface in rock slopes?
Discuss
Answer & Solution
Answer: Option C
Solution:
Circular failure is a common slope failure mode involving movement along a curved slip surface, typical in soils and weak rocks.
23
Which of the following is a key parameter in rock mass classification systems?
Discuss
Answer & Solution
Answer: Option B
Solution:
Discontinuity spacing controls rock block size and influences mechanical behavior and stability.
24
The slake durability test is used to assess:
Discuss
Answer & Solution
Answer: Option B
Solution:
The slake durability test measures how well rocks resist breakdown when subjected to cycles of wetting and drying.
25
Which phenomenon causes a sudden collapse of underground openings in weak rocks?
Discuss
Answer & Solution
Answer: Option A
Solution:
Rock burst is a violent failure caused by sudden release of stored energy in stressed rock masses underground.
26
The term "anisotropy" in rock mechanics refers to:
Discuss
Answer & Solution
Answer: Option B
Solution:
Anisotropy means rock properties vary with direction, important in analyzing stress and deformation.
27
Which instrument is used to measure deformation of rock mass in the field?
Discuss
Answer & Solution
Answer: Option A
Solution:
Extensometers measure changes in length or displacement within rock masses or structures over time.
28
What is the primary cause of rock weathering that affects engineering properties?
Discuss
Answer & Solution
Answer: Option B
Solution:
Chemical weathering alters mineral composition and weakens rock strength, impacting engineering behavior.
29
Which rock property primarily affects the stability of a tunnel face?
Discuss
Answer & Solution
Answer: Option D
Solution:
Fracture toughness defines the ability of rock to resist crack propagation at the tunnel face, affecting stability.
30
The term "slip surface" refers to:
Discuss
Answer & Solution
Answer: Option B
Solution:
A slip surface is the surface along which relative movement happens during rock or soil failure.