Which one of the following is a permeable rock that allows water to pass through it ?
Granite
Limestone
Quartzite
Sill
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2023
– Limestone is a sedimentary rock primarily composed of calcium carbonate. While the rock matrix itself can have some porosity, its permeability is often significantly enhanced by dissolution of the carbonate material by acidic groundwater, creating channels, caves, and fractures. This forms karst topography and makes limestone important aquifers.
– Granite, Quartzite, and Sill (intrusive igneous) are typically dense, crystalline rocks with low primary porosity and permeability unless they are significantly fractured.