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What does RQD (Rock Quality Designation) measure?

A. Rock color variation

B. Degree of rock weathering

C. Quality of rock core recovery

D. Depth of borehole

Answer: Option C

Solution (By Examveda Team)

RQD is a percentage representing the quality of rock core recovery during drilling.It evaluates the degree of jointing and fracture in the rock mass.Correct Answer: Quality of rock core recovery.

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