7th Class Science Water: A Precious Resource Question Bank

done Water - A Precious Resource Total Questions - 40

• question_answer1)
  Which of the following is a drinking water source?
  A)
   Sea water                           done clear
  B)
   Glaciers               done clear
  C)
          Ground water done clear
  D)
          Snow                                    done clear
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• question_answer2)
  Which of the following causes depletion in the water table of a place?
  A)
   Constructing factories and houses done clear
  B)
   Making concrete roads and floors done clear
  C)
   Deforestation done clear
  D)
   All of the above done clear
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• question_answer3)
  What makes the earth appear blue from the outer space?
  A)
    The presence of forest done clear
  B)
   The presence of sky done clear
  C)
   The presence of water done clear
  D)
   All of the above done clear
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• question_answer4)
  What is the percentage of water in the human body?
  A)
   80%                       done clear
  B)
          70%                       done clear
  C)
   60%                       done clear
  D)
          50% done clear
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• question_answer5)
  What is water?
  A)
   A stable atom done clear
  B)
   A stable element done clear
  C)
   A stable mixture done clear
  D)
   A stable compound done clear
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• question_answer6)
  Why does ice float on water?
  A)
   Ice is heavier than water. done clear
  B)
   Ice is cooler than water. done clear
  C)
   Ice is lighter than water. done clear
  D)
   Ice is a liquid. done clear
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• question_answer7)
  Which of the following statements is correct of the water table of a place?
  A)
   It changes from place to place. done clear
  B)
   It changes from time to time. done clear
  C)
   It goes down when rains are less. done clear
  D)
   All of the above done clear
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• question_answer8)
  Which property of water is used while washing clothes?
  A)
   Odour                                  done clear
  B)
   Colour  done clear
  C)
          Solubility             done clear
  D)
          Mass                    done clear
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• question_answer9)
  Which of the following is NOT soluble in water?
  A)
   Salt                                        done clear
  B)
   Sugar                    done clear
  C)
   Oxygen               done clear
  D)
          Sand done clear
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• question_answer10)
  Why is sea water unfit for use in factories though it is available in plenty?
  A)
   It contains bacteria. done clear
  B)
   It has foul smell. done clear
  C)
   It is heavier than tap water. done clear
  D)
   It has salts which get deposited in the pipelines and boilers. done clear
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• question_answer11)
  What is water in which 2% or more of salts are dissolved in it called?
  A)
   Distilled water done clear
  B)
          Pure water        done clear
  C)
          Saline water    done clear
  D)
          Mineral water done clear
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• question_answer12)
  What is the percentage of unutilized water due to lack of proper management?
  A)
   5%                         done clear
  B)
          8%                         done clear
  C)
   6%                         done clear
  D)
          10% done clear
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• question_answer13)
  Which of these is due to condensation?
  A)
   Drying of wet clothes done clear
  B)
   Water drops appear on cool water bottle done clear
  C)
   Steam rises from wet clothes when they are ironed done clear
  D)
   Black board dries up after wiping it done clear
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• question_answer14)
  How is surface water used?

  (i) For domestic purpose

  (ii) For irrigation purpose

  (iii) For industrial purpose

  A)
   Only (i) and (ii) done clear
  B)
          Only (ii) and (iii)               done clear
  C)
   Only (i) and (iii)                done clear
  D)
   (i), (ii) and (iii)   done clear
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• question_answer15)
  What is water that is available under the ground called?
  A)
   Water cycle    done clear
  B)
          Water body       done clear
  C)
          Water table    done clear
  D)
          WWTP                 done clear
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• question_answer16)
  What is the main source of water for perennial rivers?
  A)
   Lakes                    done clear
  B)
          Rainwater          done clear
  C)
          Snow                    done clear
  D)
          Dams done clear
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• question_answer17)
  Which of the following states of India had a city that faced acute water shortage in the year 1985?
  A)
   Haryana              done clear
  B)
          Rajasthan           done clear
  C)
          Maharashtra   done clear
  D)
          Punjab                 done clear
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• question_answer18)
  Which of the following contaminate water?
  A)
   Fertilizers           done clear
  B)
   Pesticides           done clear
  C)
          Human waste done clear
  D)
          All of the above done clear
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• question_answer19)
  About what percentage of earth's surface is covered with water?
  A)
   30%                       done clear
  B)
          45%       done clear
  C)
          71%                       done clear
  D)
          89% done clear
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• question_answer20)
  What is the source of ground water?
  A)
   Subsoil water done clear
  B)
   Condensation of air trapped in soil done clear
  C)
   Rain water done clear
  D)
   All of the above done clear
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• question_answer21)
  Where does rain water, after percolation, get collected?
  A)
   Above the surface of the igneous rocks done clear
  B)
   Above the surface of the impervious rocks done clear
  C)
   Above the surface of the granite rock done clear
  D)
   Above the surface of the basalt rock done clear
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• question_answer22)
  Which of the following is the purest form of fresh water?
  A)
   Well water     done clear
  B)
          Rain water         done clear
  C)
          Sea water           done clear
  D)
          Tank water done clear
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• question_answer23)
  What happens to water table if a large area is covered with construction activities?
  A)
   It becomes less. done clear
  B)
   It remains constant. done clear
  C)
   It becomes more. done clear
  D)
   It depends on the area. done clear
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• question_answer24)
  What happens to plants in areas of scanty rainfall?
  A)
   They grow extensively. done clear
  B)
   They move to other places. done clear
  C)
   They wilt and die. done clear
  D)
   They have active growth. done clear
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• question_answer25)
  In which of the following seasons will water consumption by all living beings be more?
  A)
   Winter                 done clear
  B)
          Autumn              done clear
  C)
   Summer              done clear
  D)
          Rainy                    done clear
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• question_answer26)
  Identify the oil which may exist along with ground water over the bedrocks?
  A)
   Crude oil             done clear
  B)
          Mustard oil        done clear
  C)
          Sand oil               done clear
  D)
          Groundnut oil done clear
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• question_answer27)
  What happens to ground water when it comes into contact with the interior of the earth?
  A)
   It solidifies to form ice. done clear
  B)
   It absorbs heat and gets converted to steam. done clear
  C)
   It is not effected by heat. done clear
  D)
   It does not absorb heat. done clear
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• question_answer28)
  Which power is generated from water?
  A)
   Nuclear power done clear
  B)
   Thermonuclear power done clear
  C)
   Thermal power done clear
  D)
   Hydroelectric power done clear
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• question_answer29)
  Which of the following, if used regularly can kill germs in overhead storage tanks in our houses?
  A)
   Sand done clear
  B)
   Chlorine tablets done clear
  C)
   Chewable tablets done clear
  D)
   Chalk powder done clear
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• question_answer30)
  Why is water called a universal solvent?
  A)
   It can dissolve only solids. done clear
  B)
   It can dissolve only liquids. done clear
  C)
   It can dissolve oils. done clear
  D)
   It can dissolve 90% of the substances. done clear
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• question_answer31)
  Which of the following maintains balance of water on the earth?
  A)
   Water table    done clear
  B)
          Glaciers               done clear
  C)
          Aquifer                done clear
  D)
          Water cycle done clear
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• question_answer32)
  Two plastic bottles with their bottoms cut are pushed into a trough of water as shown in the figure. Why is the level of water in bottle W less than the level of water in bottle 'B?
  A)
   Water occupies space in bottle. done clear
  B)
   Atmospheric pressure in bottle A is more than that of bottle B. done clear
  C)
   Water takes the shape of the container. done clear
  D)
   Air occupies space. done clear
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• question_answer33)
  Which of the following terms is NOT associated with ground water?
  A)
   Water table    done clear
  B)
          Infiltration          done clear
  C)
          Aquifer                done clear
  D)
          Rain water done clear
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• question_answer34)
  Which of the following graphs correctly shows the expansion of water at a temperature of \[4{{\,}^{o}}C?\]
  A)
                                                 done clear
  B)
  done clear
  C)
                                                  done clear
  D)
         done clear
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• question_answer35)
  Why is pure water very difficult to obtain?
  A)
   Water is impure in nature. done clear
  B)
   Water cannot exist in pure state. done clear
  C)
   Water is a universal solvent. done clear
  D)
   Impurities cannot be filtered from water. done clear
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• question_answer36)
  Sohail?s teacher asked to identify the correct order of the processes listed below to purify water and make it safe for drinking.

  (i) Filtration

  (ii) Sedimentation

  (iii) Chlorination

  (iv) Addition of chemicals

  Which of the following is the correct order that Sohail arranged?
  A)
   (i), (iii), (iv),(ii)                  done clear
  B)
   (iv), (ii), (i), (iii) done clear
  C)
                          (ii), (iv), (i), (iii)    done clear
  D)
          (iii), (i), (iv), (ii) done clear
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• question_answer37)
  Which of the following methods can be used to control water pollution?

  (i) Avoiding the use of chemical substances freely.

  (ii) Educating society about the dangers of water pollution.

  (iii) Using biological control in agricultural areas instead of using pesticides.

                 
  A)
   Only (i) and (ii) done clear
  B)
   Only (ii) and (iii) done clear
  C)
          Only (i) and (iii) done clear
  D)
          (i), (ii) and (iii)   done clear
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• question_answer38)
  Which of these can raise the water table of a place?
  A)
   Rainfall                                done clear
  B)
   Digging bores done clear
  C)
          Digging wells done clear
  D)
          Sea water           done clear
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• question_answer39)
  Which of the following is the correct sequence of the water cycle in nature?
  A)
   Evaporation, Precipitation, Condensation. done clear
  B)
   Precipitation, Condensation, Evaporation. done clear
  C)
   Evaporation, Condensation, Precipitation. done clear
  D)
   Condensation, Evaporation, Precipitation. done clear
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• question_answer40)
  How is most of the well water and spring- water replenished?
  A)
   By rivers                              done clear
  B)
   By floods            done clear
  C)
          By ground water done clear
  D)
              All of the above done clear
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