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Water A Precious Resource Test - 7

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Water A Precious Resource Test - 7
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Weekly Quiz Competition
  • Question 1
    1 / -0

    The process by which water from the surface of the earth moves to the atmosphere is:

    Solution
    Evaporation is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure. the process by which water from the surface of the earth moves to the atmosphere is known as evaporation.
  • Question 2
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    A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:
    Solution
    As the man digs deeper, the level where all the spaces between particles of soil and gaps between rocks were filled with water is known as the water table.

    $$\textbf{Conclusion-}$$ The upper limit of the groundwater is known as the water table. Hence, option C is correct.
  • Question 3
    1 / -0
    As the rain water is the purest form of water, this can be used in lab due to:
    Solution
    Rain water is the purest form of water as it does not contain any minerals, ions, dust particles etc. thus it can be used in lab.
  • Question 4
    1 / -0
    Well water is an example of:
    Solution
    Well water is an example of underground water. A water well is an excavation or structure created in the ground by digging or drilling to access groundwater in underground aquifers. The well water is drawn by a pump or using containers such as buckets that are raised mechanically or by hand.
  • Question 5
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    The water table is reduced below the ground due to:
    Solution
    It is because the groundwater is continuously used. Also rainfall occurs for short spells of high intensity. Because of such intensities and short duration of heavy rains, most of the rain falling on the land flows away rapidly, leaving very little water for the recharge of underground water. 
  • Question 6
    1 / -0
     Which of the following is not a source of potable water?
    Solution
    Potable water means drinking water. Well, rivers and lakes contain drinking water as these all contain either rainwater and groundwater which is suitable for drinking. The sea which contains salty water that is not suitable for drinking is not a source of potable water.
  • Question 7
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    Rainwater can be used to recharge the groundwater. This is referred to as:
    Solution
    The rainwater used for recharging the groundwater and storing it for future use at the time of water shortage is called rainwater harvesting. 
    So, the correct option is $$C$$.
  • Question 8
    1 / -0
    To prevent excessive use of water from taps and tanks, we can collect water from:
    Solution
    To prevent excessive use of water from taps and tanks, we can collect water from rain.
    Because if we use the rainwater with the help of rainwater harvesting technique the excess use of water from tanks and taps which is supplied by government can be prevented.
  • Question 9
    1 / -0
    The water found below the water table is called _____________.
    Solution
    The water found below the water table is called groundwater. It is found under the ground in the cracks and spaces in soil, sand and rock.

  • Question 10
    1 / -0
    Steam rising from wet clothes when ironed is due to ____.
    Solution
    Water present in wet clothes disappear when they are ironed. This is because water present in clothes absorb heat from the iron to evaporate, leaving the piece of cloth dry. We observe water evaporating as steam.
    Hence, option B is correct.
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