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Resources and Development Test - 23

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Resources and Development Test - 23
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which one of the following is the main cause of land degradation in Punjab?
    Solution
    Over irrigation is the main cause of land degradation in Punjab due to waterlogging leading to an increase in salinity and alkalinity in the soil. Punjab, Haryana, Uttar Pradesh are the states facing the issue of land degradation due to over-irrigation. 
    The correct answer is C.
  • Question 2
    1 / -0
    Black soil is also known as _______.
    Solution
    These soils are black in color and are also known as regur soils. Since black soil is ideal for growing cotton, it is also known as black cotton soil. It is believed that climatic conditions along with the parent rock material are the important factors for the formation of black soil
  • Question 3
    1 / -0
    What percentage of the area in India is covered by mountains?
    Solution
    • In India 30% of area is covered by mountains.
    • The mountains in these ranges include some of the world's tallest mountains which act as a natural barrier to cold polar winds.
  • Question 4
    1 / -0
    Match : List I with List II and select the correct answer from the codes given below the lists. 
    List - IList - II
    A. Maharashtra1. Alluvial
    B. Karnataka2. Latheritic
    C. UP3. Red
    D. Assam4. Black
  • Question 5
    1 / -0
    Which of the following schemes are meant for preventing soil erosion?
    Solution
    Ploughing along contours on a slope prevents soil being washed away by rainwater or by surface run off. Contours act like bunds. Terraces are levelled into step like small fields with even slope.
  • Question 6
    1 / -0
    On the basis of their continued availability, resources are classified as ___________.
    Solution
    On the basis of availability, natural resources are classified as:
    1. Renewable resources: those resources which re replenished quickly,  and thus seems to have unlimited availability. For e.g. Water, wind etc.
    2. Non-Renewable resources: those resources which are not quickly renewed or replenished. it takes them thousands of years to get replenished. For e.g. coal, petroleum etc.

  • Question 7
    1 / -0
    The percentage of fallow land since independence has come down from 7% to ____.
    Solution

    There have been Varying trends in the extent of current fallow but it has recorded an increase from 10.68 million hectares in 1950-51 to 14.79 million hectares in 1999-2000. There had been a sharp decline in fallow lands other than current fallows from 17.4 million hectare in 1950-51 to 11.18 million hectare in 1960 61.

  • Question 8
    1 / -0
    In the geographical area of our country, the soil that occupies the largest area is _____.
    Solution

    This is the most widely spread and important soil. In fact, the entire northern plains are made of alluvial soil. These soils also extend in Rajasthan and Gujarat through a narrow corridor. Alluvial soil is also found in the eastern coastal plains particularly in the deltas of the Mahanadi, the Godavari, the Krishna and the Kaveri rivers.

  • Question 9
    1 / -0
    Which soil is sandy, porous, and poor in nitrogenous matter and humus?
    Solution

    Most desert soils are called Aridisols (dry soil). These are porous sandy soils with low nitrogenous matter and humus.

  • Question 10
    1 / -0
    Which one of the following soils are less fertile and need heavy manuring and irrigation?
    Solution
    Humus content of the soil is low because most of the micro organisms, particularly the decomposers like bacteria, get destroyed due to high temperature. Laterite soils are suitable for cultivation with heavy doses of manures and fertilizers. 
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