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Remote Sensing and GIS in Geological Engineering MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Remote Sensing and GIS in Geological Engineering. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Remote Sensing and GIS in Geological Engineering chapter is particularly important for students studying Geological engineering. Page-6 section-1

51
Which GIS operation would you use to create a zone around a point feature within a specified distance?
Discuss
Answer & Solution
Answer: Option A
Solution:
Buffering generates a zone at a set distance around geographic features.This is useful for impact assessment and proximity analysis.
52
What is the advantage of microwave remote sensing over optical remote sensing?
Discuss
Answer & Solution
Answer: Option B
Solution:
Microwave remote sensing can penetrate clouds, smoke, and darkness, making it effective in all weather and lighting conditions.Examples include SAR and Radar.
53
What kind of data is stored in a raster GIS format?
Discuss
Answer & Solution
Answer: Option B
Solution:
Raster data consists of grid cells or pixels, each holding a value.This format is suitable for continuous data like elevation, temperature, or satellite images.
54
Which of these is an example of a vector GIS data type?
Discuss
Answer & Solution
Answer: Option B
Solution:
Vector data represents features as points, lines, and polygons.Land use maps commonly use polygons to define areas like forests or urban zones.
55
What is the primary function of the GIS operation called 'spatial join'?
Discuss
Answer & Solution
Answer: Option B
Solution:
Spatial join combines attribute data from two layers based on their spatial relationship.It is essential for integrating different datasets.
56
What type of map is most useful for assessing landslide hazards using GIS?
Discuss
Answer & Solution
Answer: Option C
Solution:
Slope maps show terrain steepness, critical for landslide risk assessment.GIS derives slope from DEM data to identify unstable zones.
57
Which remote sensing band is most sensitive to soil moisture variations?
Discuss
Answer & Solution
Answer: Option B
Solution:
SWIR is sensitive to moisture content due to absorption properties.This makes it useful for mapping soil moisture and drought monitoring.
58
Which is NOT a component of a GIS system?
Discuss
Answer & Solution
Answer: Option C
Solution:
Remote sensing satellites provide data but are not components of GIS itself.GIS consists of hardware, software, data, and people.
59
What is the main purpose of thematic mapping in GIS?
Discuss
Answer & Solution
Answer: Option B
Solution:
Thematic maps show spatial distribution of particular phenomena like soil types, hazard zones, or land use.They help in focused analysis and decision-making.
60
What is the major limitation of aerial photography compared to satellite remote sensing?
Discuss
Answer & Solution
Answer: Option C
Solution:
Aerial photography requires clear weather and daylight.Satellite sensors (like radar) can operate in all weather and lighting, overcoming this limitation.