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Geological Hazards MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Geological Hazards. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Geological Hazards chapter is particularly important for students studying Geological engineering. Page-5 section-1

41
How can vegetation help in controlling landslides?
Discuss
Answer & Solution
Answer: Option C
Solution:
Vegetation stabilizes slopes by reinforcing the soil with root systems and reducing surface erosion.It is a natural measure for slope protection.
42
What geological hazard is most likely in a steep terrain with heavy rainfall?
Discuss
Answer & Solution
Answer: Option C
Solution:
In steep slopes and high rainfall, landslides are most common due to saturation and weakening of slope material.
43
What device is used to monitor ground movements on slopes to predict landslides?
Discuss
Answer & Solution
Answer: Option C
Solution:
An extensometer measures ground displacement, especially cracks or separation in slopes, to monitor landslide risks.
44
Which of the following is an effective structural mitigation for landslides?
Discuss
Answer & Solution
Answer: Option B
Solution:
A retaining wall is a structural solution that supports unstable slopes and prevents material from sliding.
45
What does a seismologist study?
Discuss
Answer & Solution
Answer: Option D
Solution:
A seismologist specializes in the study of earthquakes and the propagation of seismic waves through the Earth's crust.
46
Which type of fault is associated with tensional forces?
Discuss
Answer & Solution
Answer: Option C
Solution:
Normal fault occurs due to tensional forces that pull the crust apart.This causes the hanging wall to move downward relative to the footwall.
47
A volcanic hazard that consists of a fast-moving current of hot gas and volcanic matter is called:
Discuss
Answer & Solution
Answer: Option B
Solution:
Pyroclastic flow is a highly dangerous volcanic hazard comprising hot gases, ash, and rock fragments moving rapidly down volcano slopes.It can destroy everything in its path due to high temperature and speed.
48
Which instrument is primarily used to detect earthquakes?
Discuss
Answer & Solution
Answer: Option B
Solution:
Seismograph records ground motions during earthquakes.It provides critical data on earthquake magnitude, duration, and wave types.
49
The sudden release of energy in Earth's crust that creates seismic waves is called:
Discuss
Answer & Solution
Answer: Option C
Solution:
Earthquake is the term for the sudden release of energy in the crust, creating seismic waves.It usually occurs along geological faults.
50
Which natural hazard is often linked to rapid snowmelt in mountainous areas?
Discuss
Answer & Solution
Answer: Option B
Solution:
Avalanche involves the rapid downslope movement of snow and ice, triggered by factors like snowmelt or vibrations.It is common in alpine and Himalayan regions.