App Logo

No.1 PSC Learning App

1M+ Downloads

What is salinisation?

  1. Salinity refers to the salt content of the soil.
  2. Salinisation is a decrease in the concentration of salts in the soil.
  3. Salinisation is a problem primarily found in non-irrigated arid regions.

    AAll

    BNone of these

    Cii, iii

    Di only

    Answer:

    D. i only

    Read Explanation:

    • The salt content of the soil is known as - Salinity

    • An increase in the concentration of salts in soil is called Salinisation

    • Salinisation is a problem faced in many irrigated areas, especially where evaporation rates are high.


    Related Questions:

    നമ്മുടെ ആവാസവ്യവസ്ഥയിൽ ഊർജപ്രവാഹം നടക്കുന്നതെങ്ങനെ ?
    The term Biodiversity was first coined by:

    Which statement best characterizes the oxygen levels in the bottom layer of a water body?

    1. Oxygen levels are highest due to active photosynthesis.
    2. Oxygen levels are significantly reduced due to decomposition.
    3. Oxygen levels are maintained by direct atmospheric diffusion.
    4. Oxygen levels are comparable to the surface layer.

      Identify the false statement regarding the causes of deforestation.

      1. Raw materials for industrial use, such as plywood and paper pulp, do not contribute to deforestation.
      2. Increasing demand for fuel wood contributes to deforestation.
      3. Development projects like hydro-electric projects lead to forest destruction.
      4. Growing food needs, met by clearing forests, reduce forest area.
        Approximately how much fresh water, equivalent to rainfall, do rivers carry annually over the land surface?