Examveda

Which factor decreases the permeability of an aquifer?

A. Increased porosity

B. Cementation

C. Well grading

D. Sorting of grains

Answer: Option B

Solution (By Examveda Team)

Cementation reduces permeability by filling pore spaces with precipitated minerals, thus reducing the interconnected voids needed for fluid flow.

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Related Questions on Groundwater and Hydrogeology

What is an aquifer?

A. Rock that does not hold water

B. Layer that restricts water flow

C. Permeable rock that stores and transmits water

D. Layer that absorbs contaminants