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Geological Engineering · Q63

Site Investigation and Geotechnical Exploration

Engineering and GATE · Geological Engineering · question 63

Q63

Which technique is best for mapping shallow subsurface features like sinkholes?

A.
Gravity survey
B.
Electrical resistivity survey
Answer
C.
Plate load test
D.
Core drilling

Answer: Option B

Solution

Answer: Option B
Solution:
Electrical resistivity can detect anomalies such as voids, fractures, and sinkholes by measuring how current flows through the subsurface.