Sub-surface or Tile Drainage MCQ

Test your knowledge with important Sub-surface or Tile Drainage MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Sub-surface or Tile Drainage MCQs at Bissoy

• How many cubic metres of water will be removed for this particular period of a system designed to use a D.C of 1.5 cm draining 20 hectares for a capacity of 5 days?
  ক

  10000 m3

  খ

  25000 m3

  গ

  15000 m3

  ঘ

  20000 m3
• Which type of alternate layouts system for tile drainage has two mains?
  ক

  Grid Iron System

  খ

  Natural System

  গ

  Double main System

  ঘ

  Herring Bone System
• What is the size of the tile at an outlet of a 12 hectare drainage system, if the D.C is 2 cm and the tile grade is 0.5%. Assume the rugosity coefficient as 0.015 for the tile drain material.
  ক

  10 cm

  খ

  20 cm

  গ

  15 cm

  ঘ

  25 cm
• What structure is surrounded around the tile drains when used in less pervious strata?
  ক

  Envelope Filters

  খ

  French Drains

  গ

  Beehive Grate

  ঘ

  Surface Inlet
• Under what strata the tile drainage should not be placed?
  ক

  In Shallow Depths

  খ

  More Pervious Strata

  গ

  Less Pervious Strata

  ঘ

  Pervious Strata
• In what chemical ways does tile drainage help in plant growth?
  ক

  Decreases Alkalinity of Soils

  খ

  Increases salinity of Soils

  গ

  Increases Nitrogen

  ঘ

  Reduces and Removes Toxic Substances
• Which type of soils is benefited by using tile drainage?
  ক

  Dry Soils

  খ

  Black Soils

  গ

  Wet Soils

  ঘ

  Red Soils
• Tile drainage helps to reduce soil erosion.
  ক

  True

  খ

  False
• How can tile drainage help to increase crop yields?
  ক

  Increases Free Gravity Water

  খ

  Increases Volume of Soil

  গ

  Decrease Air Circulation

  ঘ

  Increases Water Table Level
• For maximum productivity of crops both surface and sub-surface drains are sometimes needed.
  ক

  True

  খ

  False