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This question belongs to Geological Engineering Site Investigation And Geotechnical Exploration

Site Investigation and Geotechnical Exploration

?

Which of the following is NOT a direct method of soil exploration?

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

Answer & Solution

Correct Answer: Option C

Electrical resistivity is a geophysical (indirect) method, while the others involve physically reaching and retrieving subsurface materials.

Question posted by Examveda

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