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What is the function of a core barrel in drilling?

A. Provides water for lubrication

B. Measures temperature

C. Retrieves undisturbed rock samples

D. Supports drill rig

Answer: Option C

Solution (By Examveda Team)

A core barrel is a hollow cylinder attached to a drill rig that extracts cylindrical rock samples (cores) for geological analysis.Correct Answer: Retrieves undisturbed rock samples.

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