Groundwater System Overview
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Questions and Answers

What environmental damage is caused by strip mining according to the text?

  • Improvement in aesthetic value of the region
  • Devegetation and defacing of landscape (correct)
  • Enhancement of natural hydrological processes
  • Decrease in soil erosion
  • Which process is mainly associated with subsidence of land?

  • Surface water pollution
  • Groundwater contamination
  • Underground mining (correct)
  • Strip mining
  • How does mining activities affect groundwater according to the text?

  • Promotes recharge of aquifers
  • Enhances groundwater quality
  • Increases natural hydrological processes
  • Pollutes groundwater and leads to health hazards (correct)
  • What is the impact of acid mine drainage on nearby streams and lakes?

    <p>Contaminates the water and is detrimental to aquatic life</p> Signup and view all the answers

    What kind of disasters can subsidence of mining areas lead to?

    <p>Buildings tilting, road buckling, and gas leaking from pipelines</p> Signup and view all the answers

    How does mining affect the landscape in terms of aesthetics?

    <p>Spoils aesthetic value with huge quantities of debris and tailings</p> Signup and view all the answers

    What is the common method suggested in the text for getting rid of salts caused by salinization?

    <p>Flushing out salts with good quality water</p> Signup and view all the answers

    Which method involves laying an underground network of perforated drainage pipes?

    <p>Sub-surface drainage system for flushing out salts</p> Signup and view all the answers

    Where was the experimental station of CSSRI located where a sub-surface drainage system was tried?

    <p>Sampla, Haryana</p> Signup and view all the answers

    What was the outcome of CSSRI's research applications in Zarifa Viran village?

    <p>Conversion from barren land to productive land</p> Signup and view all the answers

    What caused the first alarming report of salt-affected wasteland formation in 1858?

    <p>Use of saline irrigation water</p> Signup and view all the answers

    What is the primary recommended method for dealing with salinity in soils according to the text?

    <p>Flushing out salts with good quality water</p> Signup and view all the answers

    What is the typical rate at which groundwater moves?

    <p>1 meter in a year</p> Signup and view all the answers

    What type of aquifer is formed when water collects over a rock or compact clay?

    <p>Unconfined aquifer (Water table)</p> Signup and view all the answers

    Which phenomenon occurs when groundwater withdrawal exceeds the recharge rate, resulting in the compaction of sediments in the aquifer?

    <p>Ground subsidence</p> Signup and view all the answers

    What are some common problems associated with ground subsidence?

    <p>Tidal flooding</p> Signup and view all the answers

    What is the main consequence of excessive mining of groundwater in arid regions for irrigation purposes?

    <p>Lowering of water table</p> Signup and view all the answers

    Which type of aquifer is sandwitched between two layers having very low permeability?

    <p>Confined aquifer</p> Signup and view all the answers

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