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ICSE-X-Geography

06: Water Resources Class 10 Geography

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    Section : A
  • Qstn #1
    What do you mean by irrigation?
    Ans : The man-made arrangements of supplying water to the fields are known as irrigation.
  • Qstn #2
    Name one State where tank irrigation is important. Give three disadvantages of tank irrigation.
    Ans : Tamil Nadu is the state where tank irrigation in important. The disadvantages of tanks:
    1. They occupy large areas of land which could be used for cultivation.
    2. There is also a lot of evaporation as these tanks are usually shallow.
    3. Construction entails much expenditure.
  • Qstn #3
    What is meant by Rain Water Harvesting?
    Ans : It is the term used for capturing the rain water which would normally fall off and get wasted. It is used for the garden, washing clothes, etc.

    Short Questions

  • #
    Section : B
  • Qstn #1
    Why is canal irrigation more popular in Northern India?
    Ans :
    1. The rivers are perennial as they are fed by the melting snows,
    2. The surface of the land is almost flat and soft. Hence it is easy to dig canals,
    3. The demand for irrigation is very great in North India as a variety of crops are grown,
    4. Type of cultivation is intensive.
  • Qstn #2
    What is Garden Watersaver Diverter (GWS)? What advantage does it have over other rain water harvesting devices?
    Ans : It is a downspout rain water diverter which simplifies the collection of rain water. It has advantages over other rain water collection systems in that it is installed in minutes and deactivates in seconds during winter when stored water is not needed. As it is kept underground or in low visibility locations more containers can be added (linked) or filled by simply moving a hose pipe.
  • Qstn #3
    What is the purpose of the float switch in the Super Rainwater System?
    Ans : The float switch is an innovative device mounted on the tank which automatically controls the water supply. If the rain water tank is full it will automatically pump the rain water for use in the garden or washing machine. If the rain water tank is empty or when there is a dry spell and water in the tank falls to the minimum level, the floating switch triggers the use of the normal mains water.
  • Qstn #4
    Mention two advantages of rainwater harvesting.
    Ans : Two advantages of rainwater harvesting are:
    1. Recharge of groundwater.
    2. Conservation of water, reduces surface runoff.
  • Qstn #5
    Mention two advantages that surface wells have over inundation canals.
    Ans : Wells are an independent source of irrigation. It may be used as and when the necessity arises.
    1. Wells are simplest and cheapest source of irrigation, can be dug at any convenient place.
    2. Inundation canals are ‘flood-water’ canals and have water in them only when the river is flooded during the rainy season.
  • Qstn #6
    Name two states in which tube wells are extensively used. Give a reason to explain its importance as a source of irrigation.
    Ans : Tube wells are extensively used in Punjab and Haryana because the land is soft to bore and availability of electric power.
  • Qstn #7
    Give two advantages and one disadvantages that tube wells have over surface wells.
    Ans : Advantages of tube wells over surface wells:
    1. Tube wells do not result in evaporation of water like surface wells.
    2. It irrigates large area (400 hectares).

    Disadvantage of tube wells over surface wells:
    However tube wells are only possible in areas where the groundwater level is not too low power is needed to drain water.
  • Qstn #8
    Where are tanks most widely used in India? Why?
    Ans : Tanks are mostly used in peninsular India. This is because
    1. Peninsular India consists of hard impervious rocks which favours the storage of water.
    2. Depression in the plateau region can be used as Natural tanks.

    Long Questions

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    Section : C
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