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Geological Engineering · Q20

Site Investigation and Geotechnical Exploration

Engineering and GATE · Geological Engineering · question 20

Q20

The presence of boulders in soil is best detected using:

A.
Electrical resistivity
Answer
B.
Auger boring
C.
Rotary drilling
D.
Test pit

Answer: Option A

Solution

Answer: Option A
Solution:
Electrical resistivity detects subsurface anomalies like boulders, cavities, and water tables by measuring changes in electrical conductivity.