7th Class Science Water: A Precious Resource Question Bank

done Water : A Precious Resource Total Questions - 102

• question_answer1)
  When is world water day celebrated?
  A)
  24th March                  done clear
  B)
  28th February done clear
  C)
  22nd March                 done clear
  D)
  1st March done clear
  View Solution play_arrow

• question_answer2)
  Water exists in
  A)
  5 forms            done clear
  B)
  3 forms done clear
  C)
  no form                        done clear
  D)
  2 form done clear
  View Solution play_arrow

• question_answer3)
  The process of seeping water into the ground is called _________:
  A)
  aquifer                         done clear
  B)
  infiltration done clear
  C)
  Bawri              done clear
  D)
  water table done clear
  View Solution play_arrow

• question_answer4)
  The process of recharging ground water using rain water is called
  A)
  drip irrigation   done clear
  B)
  water harvesting done clear
  C)
  Bawri               done clear
  D)
  Infiltration done clear
  View Solution play_arrow

• question_answer5)
  Which of the following will allow water to see \[\text{ }\!\!\rho\!\!\text{ }\] in easily?
  A)
  marble floor                 done clear
  B)
  cement floor done clear
  C)
  grass lawn         done clear
  D)
  pucca floor done clear
  View Solution play_arrow

• question_answer6)
  Depletion of water table is due to
  A)
  scanty rainfall done clear
  B)
  increase in population done clear
  C)
  industrial activities done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer7)
  The process of groundwater getting stored between the layers of hard rock below the water table is known as ________.
  A)
  infiltration                    done clear
  B)
  Aquifer done clear
  C)
  water table                   done clear
  D)
  Bawri done clear
  View Solution play_arrow

• question_answer8)
  To save runaway water we should
  A)
  Raise embankments     done clear
  B)
  raise dams done clear
  C)
  dig walls          done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer9)
  Only _______ % of water on earth is available for our use.
  A)
  5%                               done clear
  B)
  20% done clear
  C)
  1%                   done clear
  D)
  30% done clear
  View Solution play_arrow

• question_answer10)
  Upper limit of groundwater is called__________.
  A)
  water table         done clear
  B)
  aquifer done clear
  C)
  freshwater                    done clear
  D)
  soil water done clear
  View Solution play_arrow

• question_answer11)
  Out of the following, select those that would help to reduce water pollution. (i) use of sewers for removal of urban waste (ii) use of unleaded petrol in cars (iii) spraying of pesticides on plants (iv) We should not excreate in open.
  A)
  (i) and (ii)                    done clear
  B)
  (iii) and (iv) done clear
  C)
  (i) and (iv)       done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer12)
  Select the one that is incorrect for vermin processing toilet.
  A)
  It is a new method arid has been recently tested in India. done clear
  B)
  It is a novel, low water use toilet that is safe for processing of human waste done clear
  C)
  In it the human excreta is treated by round worms and cockroaches done clear
  D)
  In if the human excreta is completely converted to vermi-cakes done clear
  View Solution play_arrow

• question_answer13)
  The international decade for action on "water for life" by United Nations General Assembly was declared on
  A)
  Jan, 26           done clear
  B)
  March, 22 done clear
  C)
  April, 14           done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer14)
  Sewage refers to waste water that is released by
  A)
  homes                          done clear
  B)
  industries done clear
  C)
  offices                          done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer15)
  Select the disease that is not caused by improper disposal of sewage.
  A)
  Cholera            done clear
  B)
  Typhoid done clear
  C)
  Heart attack                 done clear
  D)
  Jaundice done clear
  View Solution play_arrow

• question_answer16)
  In a waste water treatment plant, after passing the waste water through a grit and sand removal tank, the water is allowed to settle in a large tank. The solids that settle at the bottom of large tank and called
  A)
  sewage             done clear
  B)
  sullage done clear
  C)
  sludge                          done clear
  D)
  activated sludge done clear
  View Solution play_arrow

• question_answer17)
  Which plant is suggested for purification of sewage pond water?
  A)
  waste water plant         done clear
  B)
  Eucalyptus plant done clear
  C)
  urena plant                  done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer18)
  Which of the following group is against the plantation of Eucalyptus trees?
  A)
  Paper manufacturers done clear
  B)
  Wild life protection group done clear
  C)
  Environmentalists done clear
  D)
  Matches manufacturers done clear
  View Solution play_arrow

• question_answer19)
  Sewage treatment
  A)
  is a process of waste water treatment. done clear
  B)
  refers to waste water that is released by homes, industries, hospitals etc. done clear
  C)
  refers to the rain water that run down the streets during heavy rains. done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer20)
  The impurities present in sewage may consist of
  A)
  organic substances done clear
  B)
  inorganic substances done clear
  C)
  Nutrients done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer21)
  Select those which are organic substances present in waste water.
  A)
  pesticides                                 done clear
  B)
  herbicides done clear
  C)
  fruit and vegetable waste done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer22)
  Treatment plants
  A)
  reduce pollutants in waste water to a level where nature can take care of it. done clear
  B)
  makes the waste water free of all pollutants done clear
  C)
  Both the above are correct done clear
  D)
  None of these is correct. done clear
  View Solution play_arrow

• question_answer23)
  The sludge waste originates from
  A)
  kitchen          done clear
  B)
  toilets done clear
  C)
  industrial organizations done clear
  D)
  commercial organizations done clear
  View Solution play_arrow

• question_answer24)
  In the treatment of waste water, following steps are involved. (i) Aeration                  (ii) filtration (iii) Chlorination The correct order of these steps is
  A)
  (i), (iii), (ii)                   done clear
  B)
  (iii), (ii), (i) done clear
  C)
  (i), (ii), (iii)       done clear
  D)
  (ii), (iii) (i) done clear
  View Solution play_arrow

• question_answer25)
  When waste water is passed through bar screens in WWTP, it removes
  A)
  plastic packets             done clear
  B)
  sand done clear
  C)
  grit                               done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer26)
  Which of the following are removed by use of skimmer in WWTP?
  A)
  Oils                              done clear
  B)
  Greases done clear
  C)
  Both of these     done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer27)
  The percentage of water in activated sludge is about
  A)
  90%                             done clear
  B)
  92% done clear
  C)
  95%                             done clear
  D)
  97% done clear
  View Solution play_arrow

• question_answer28)
  What are the products of waste water treatment system?
  A)
  sludge                          done clear
  B)
  biogas done clear
  C)
  Both of these   done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer29)
  How many forms of water are available on earth?
  A)
  1                                  done clear
  B)
  2 done clear
  C)
  3                      done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer30)
  The water table of a place
  A)
  changes from time to time done clear
  B)
  changes from place to place done clear
  C)
  goes down when rain is less done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer31)
  Which of the following help in keeping the balance of fresh water on earth?
  A)
  WWTP             done clear
  B)
  Greenhouse effect        done clear
  C)
  Water cycle done clear
  D)
  Transpiration done clear
  View Solution play_arrow

• question_answer32)
  Which of the following is used as a source of drinking water by us?
  A)
  Glaciers                       done clear
  B)
  Sea water done clear
  C)
  Groundwater       done clear
  D)
  Rain done clear
  View Solution play_arrow

• question_answer33)
  Groundwater will not be depleted due to
  A)
  a forestation done clear
  B)
  Deforestation done clear
  C)
  Establishing thermal power plants done clear
  D)
  Cultivating high yielding crops done clear
  View Solution play_arrow

• question_answer34)
  Germs and bacteria are destroyed by
  A)
  chlorination                 done clear
  B)
  Boiling done clear
  C)
  Both (a) and (b)     done clear
  D)
  filtration done clear
  View Solution play_arrow

• question_answer35)
  Water that is fit for drinking is called
  A)
  rainwater                     done clear
  B)
  potable water done clear
  C)
  water table                   done clear
  D)
  groundwater done clear
  View Solution play_arrow

• question_answer36)
  Sea water is unfit for drinking because
  A)
  it contains dissolved salts done clear
  B)
  it contains sand done clear
  C)
  it contain iodine done clear
  D)
  it can not be cleaned done clear
  View Solution play_arrow

• question_answer37)
  he water that seeps into the ground during rainfall and is available as underground water resource is called _____
  A)
  rainwater                     done clear
  B)
  river water done clear
  C)
  groundwater       done clear
  D)
  aquifer done clear
  View Solution play_arrow

• question_answer38)
  Which of the following things should be present in drinking water?
  A)
  suspended impurities done clear
  B)
  dissolved gases like \[{{\text{O}}_{\text{2}}}\And \text{C}{{\text{O}}_{\text{2}}}\] done clear
  C)
  germs and bacteria      done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer39)
  Which of the following is a traditional method of collecting water?
  A)
  Bawari        done clear
  B)
  well done clear
  C)
  canal                done clear
  D)
  tank done clear
  View Solution play_arrow

• question_answer40)
  Which of the following habits should be followed to avoid wastage of water?
  A)
  turn off taps when not in use done clear
  B)
  use bucket and mug instead of pipe done clear
  C)
  Mop the floor instead of washing done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer41)
  How can we take out water from an acquifer?
  A)
  By using tube well        done clear
  B)
  By digging a well done clear
  C)
  By hand pump done clear
  D)
  Both (a) and (c) done clear
  View Solution play_arrow

• question_answer42)
  The upper limit of water under the ground is called _________
  A)
  ground table                 done clear
  B)
  water table done clear
  C)
  acquifer                       done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer43)
  Ground water can be recharged by ________
  A)
  Infiltration   done clear
  B)
  rain water flow done clear
  C)
  Water table                  done clear
  D)
  aquifers done clear
  View Solution play_arrow

• question_answer44)
  DIRECTIONS: Match Column I with column Ii and select the correct answers using the code given below the columns.

  Column-I	Column-II
  (A) Ground water	(p) Surface water
  (B) Ocean	(q) Aquifers
  (C) Clouds	(r) Rain
  (D) Precipitadon	(s) Dirt and water vapours

  A)
  (A) \[\to \] (p),(B) \[\to \] (q),(C) \[\to \] (r),(D) \[\to \] (s) done clear
  B)
  (A) \[\to \] (q),(B) \[\to \] (p),(C) \[\to \] (s),(D) \[\to \] (r) done clear
  C)
  (A) \[\to \] (r),(B) \[\to \] (s),(C) \[\to \] (p),(D) \[\to \] (q) done clear
  D)
  (A) \[\to \] (s),(B) \[\to \] (r),(C) \[\to \] (q),(D) \[\to \] (p) done clear
  View Solution play_arrow

• question_answer45)
  DIRECTIONS: Match Column I with column Ii and select the correct answers using the code given below the columns.

  Column-I	Column-II
  (A) Solid	(p) Water in oceans
  (B) Liquid	(q) Water in ice caps
  (C) Gas	(r) Water in atmosphere
  (D) Water harvesting	(s) Rain water harvesting

  A)
  (A) \[\to \] (p),(B) \[\to \] (q),(C) \[\to \] (r),(D) \[\to \] (s) done clear
  B)
  (A) \[\to \] (q),(B) \[\to \] (p),(C) \[\to \] (r),(D) \[\to \] (s) done clear
  C)
  (A) \[\to \] (p),(B) \[\to \] (q),(C) \[\to \] (s),(D) \[\to \] (r) done clear
  D)
  (A) \[\to \] (q),(B) \[\to \] (p),(C) \[\to \] (s),(D) \[\to \] (r) done clear
  View Solution play_arrow

• question_answer46)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is a scarce commodity. Water shortage has become a matter of concern throughout the world. It is estimated that more than one-third of people in the world could face water scarcity. To attract the attention of everybody towards conserving water. We celebrate water day every year. Though about 71% of the earth's surface is covered with water then why is this water scarcity?
  A)
  Most of water available on earth is not fit for human consumption. done clear
  B)
  The water present in seas is far away from most of the population. done clear
  C)
  Rivers get flooded and the water is wasted done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer47)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is a scarce commodity. Water shortage has become a matter of concern throughout the world. It is estimated that more than one-third of people in the world could face water scarcity. To attract the attention of everybody towards conserving water. We celebrate water day every year. Which of the following is fit for use?
  A)
  Sea water        done clear
  B)
  Ground water done clear
  C)
  Freshwater      done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer48)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is a scarce commodity. Water shortage has become a matter of concern throughout the world. It is estimated that more than one-third of people in the world could face water scarcity. To attract the attention of everybody towards conserving water. We celebrate water day every year. We celebrate water day on
  A)
  March, 22    done clear
  B)
  April, 8 done clear
  C)
  March, 8         done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer49)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 When water circulates through the water cycle it can be found in all the three forms i.e. solid, liquid and gas at any given time somewhere on the earth. The continuous cycling of water among the three forms keeps the total amount of water on the earth constant even when the whole world is using it. In the solid form the water is available.
  A)
  in ice caps at the poles of the earth. done clear
  B)
  in snow-covered mountains done clear
  C)
  in glaciers done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer50)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 When water circulates through the water cycle it can be found in all the three forms i.e. solid, liquid and gas at any given time somewhere on the earth. The continuous cycling of water among the three forms keeps the total amount of water on the earth constant even when the whole world is using it. The amount of water present in air in the form of water vapor
  A)
  remains constant at a place throughout the year. done clear
  B)
  remains constant at a place depending upon its distance from seas. done clear
  C)
  Both the above are correct. done clear
  D)
  None of the above is correct. done clear
  View Solution play_arrow

• question_answer51)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 When water circulates through the water cycle it can be found in all the three forms i.e. solid, liquid and gas at any given time somewhere on the earth. The continuous cycling of water among the three forms keeps the total amount of water on the earth constant even when the whole world is using it. The process by which water from seas goes to the atmospheric air, in water cycle, is called
  A)
  condensation               done clear
  B)
  evaporation done clear
  C)
  transportation              done clear
  D)
  transpiration done clear
  View Solution play_arrow

• question_answer52)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The rain water and water from other sources such as rivers and ponds seeps through the soil and fills the empty spaces and cracks deep below the ground. The ground water thus gets recharged by this process. At places the ground water is stored between the layers of hard rock below the water table. The process of seeping of water into the ground is called
  A)
  seepage            done clear
  B)
  infiltration done clear
  C)
  ground filtration           done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer53)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The rain water and water from other sources such as rivers and ponds seeps through the soil and fills the empty spaces and cracks deep below the ground. The ground water thus gets recharged by this process. At places the ground water is stored between the layers of hard rock below the water table. The places where the ground water is stored between layers of hard rock below the water table is known as
  A)
  spring                           done clear
  B)
  aquifer done clear
  C)
  bore well         done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer54)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 The rain water and water from other sources such as rivers and ponds seeps through the soil and fills the empty spaces and cracks deep below the ground. The ground water thus gets recharged by this process. At places the ground water is stored between the layers of hard rock below the water table. Ground water is
  A)
  water present in seas, rivers etc. done clear
  B)
  water found below the water table. done clear
  C)
  water that covers about 71% of earth's surface. done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer55)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The water fit for human consumption is fresh water. Reason (R): Most of the water on earth's surface is not fit for human consumption.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer56)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Water is essential for living beings. Reason (R): Water is known as Elixir of life.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer57)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Water cycle maintains total water reserves on earth. Reason (R): Water cycle involves continuous cycling of water into solid, liquid and gaseous forms of water.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer58)
  DIRECTIONS: The questions in this segment consists of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Water table at a place does not vary Reason (R): Ground water is recharged by the process of infiltration.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer59)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) The fresh water stored in ground is much more than that present in rivers and lakes of world. (ii) Fresh water is usually unfit for consumption.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer60)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) The problem of water shortage is faced by urban population only (ii) Water shortage is a universal problem.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer61)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) The cycling of water among its three forms that keeps total amount of water constant in nature is called water cycle. (ii) Use of rain water for harvesting is called rain water harvesting.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer62)
  DIRECTIONS: Carefully observe pictures given below and answer the following questions. The diagram below shows the water cycle. Which letter represents the process of evaporation?
  A)
  A                done clear
  B)
  B done clear
  C)
  C                                 done clear
  D)
  D done clear
  View Solution play_arrow

• question_answer63)
  Select the one that is not responsible for water shortage.
  A)
  Increase in population done clear
  B)
  Rapid growth of industries done clear
  C)
  Heavy rain fall done clear
  D)
  Mismanagement of water resources done clear
  View Solution play_arrow

• question_answer64)
  The total water
  A)
  in lakes and rivers of the world remain constant. done clear
  B)
  under the ground remains constant done clear
  C)
  in the seas and oceans of the world remains constant. done clear
  D)
  of the world remains constant. done clear
  View Solution play_arrow

• question_answer65)
  The year 2003 AD was recognized as international year of fresh water, so as to
  A)
  propagate about the natural resource. done clear
  B)
  make people aware of this dwindling natural resource. done clear
  C)
  create awareness about the availability of water in the world. done clear
  D)
  celebrate it as a long festival. done clear
  View Solution play_arrow

• question_answer66)
  Aquifer
  A)
  It refers to the place where ground water is stored between the layers of hard rock above water table. done clear
  B)
  It refers to the place where ground water is stored between the layers of hard rock below the water table. done clear
  C)
  Both the above are correct. done clear
  D)
  None of these is correct done clear
  View Solution play_arrow

• question_answer67)
  Water table
  A)
  varies from places to place done clear
  B)
  may change even at a given place done clear
  C)
  Both the above are correct done clear
  D)
  None of these is correct done clear
  View Solution play_arrow

• question_answer68)
  Out of the total water present on earth, more than 97% is present in seas and oceans. The water present in seas and oceans is not fit for human consumption. Only fresh water is fit for human consumption. The fraction of water that is available for human use is
  A)
  3%                               done clear
  B)
  2.1% done clear
  C)
  1.14%                          done clear
  D)
  0.006% done clear
  View Solution play_arrow

• question_answer69)
  Any sample of water that contains more than 2% of dissolved salts, particularly common salt, is called
  A)
  potable water               done clear
  B)
  saline water done clear
  C)
  distilled water               done clear
  D)
  decanted water done clear
  View Solution play_arrow

• question_answer70)
  The tap water supplied through water distributions system is sweet whereas distilled water is bitter and we cannot drink it, because
  A)
  sugar has been added to tap water done clear
  B)
  tap water contains dissolved gases and salts in it done clear
  C)
  Chemical treatment of tap water done clear
  D)
  None of the above is correct. done clear
  View Solution play_arrow

• question_answer71)
  It is a source by which ground water is recharged it is
  A)
  aquifer                         done clear
  B)
  infiltration done clear
  C)
  condensation               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer72)
  It is a technique of watering plants in which we make use of narrow tubing's to deliver water directly at the base of the plant. It is
  A)
  irrigation                      done clear
  B)
  fountain irrigation done clear
  C)
  drip irrigation done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer73)
  It is the minimum amount of water recommended by United Nations for drinking, washing, cooking and maintaining proper hygiene. It is recommended per person and is
  A)
  20 liters per day           done clear
  B)
  50 liters per day done clear
  C)
  100 liters per day         done clear
  D)
  200 liters per day done clear
  View Solution play_arrow

• question_answer74)
  It is a type of waste that originates from kitchen it is
  A)
  foul waste        done clear
  B)
  sludge waste done clear
  C)
  trade waste                  done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer75)
  Fresh water refers to
  A)
  water brought home recently. done clear
  B)
  water which makes us energetic and fresh if we drink it done clear
  C)
  water that is fit for human consumption. done clear
  D)
  All of the above are correct. done clear
  View Solution play_arrow

• question_answer76)
  Water Cycle
  A)
  refers to cycling of water among its three forms that keeps total amount of water on earth constant. done clear
  B)
  essential for various forms of water to change from one form to other. done clear
  C)
  taking water from one place to another and bring it back to the original place after completing a fall cycle. done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer77)
  Depletion of water table, refers to
  A)
  going down of water table. done clear
  B)
  the increase in depth of water table done clear
  C)
  Both the above are correct done clear
  D)
  None of the above is correct done clear
  View Solution play_arrow

• question_answer78)
  Water harvesting means
  A)
  to get a crop of water done clear
  B)
  the use of rain water to recharge ground water done clear
  C)
  the use of rain water to discharge ground water done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer79)
  Which of the following causes a depletion in water table of a place?
  A)
  Constructing factories and houses done clear
  B)
  Making concrete roads done clear
  C)
  Deforestation   done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer80)
  One of the following processes is not a step involved in water cycle in nature?
  A)
  Precipitation                done clear
  B)
  Evaporation done clear
  C)
  Transpiration done clear
  D)
  Photosynthesis done clear
  View Solution play_arrow

• question_answer81)
  Eutrophication results in reduction of
  A)
  dissolved hydrogen      done clear
  B)
  dissolved oxygen done clear
  C)
  dissolved nitrate           done clear
  D)
  mineral salts done clear
  View Solution play_arrow

• question_answer82)
  Percolation tanks and wells are used for
  A)
  irrigation done clear
  B)
  harvesting of flood water done clear
  C)
  supply of drinking water done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer83)
  DIRECTIONS: Match column I with column II and select the correct answers using the code given below the columns.

  Column-I	Column-II
  (A) Evaporation	(p) removing insoluble impurities
  (B) Precipitation	(q) kills germs and bacteria
  (C) Filtration	(r) change of water to vapour
  (D) Chlorination	(s) rain

  A)
  (A) \[\to \] (s),(B) \[\to \] (q),(C) \[\to \] (p),(D) \[\to \] (r) done clear
  B)
  (A) \[\to \] (r),(B) \[\to \] (s),(C) \[\to \] (p),(D) \[\to \] (q) done clear
  C)
  (A) \[\to \] (r),(B) \[\to \] (p),(C) \[\to \] (q),(D) \[\to \] (s) done clear
  D)
  (A) \[\to \] (q),(B) \[\to \] (s),(C) \[\to \] (p),(D) \[\to \] (r) done clear
  View Solution play_arrow

• question_answer84)
  DIRECTIONS: Match column I with column II and select the correct answers using the code given below the columns.

  Column - I	Column - II
  (A) Bawari	(p) Storing rain water
  (B) Drip irrigation	(q) traditional storage tanks
  (C) rain water harvesting	(r) planting more trees
  (D) a forestation deliver water at the	(s) narrow tubing?s to base of plant

  A)
  (A) \[\to \] (p),(B) \[\to \] (s),(C) \[\to \] (q),(D) \[\to \] (r) done clear
  B)
  (A) \[\to \] (r),(B) \[\to \] (s),(C) \[\to \] (q),(D) \[\to \] (p) done clear
  C)
  (A) \[\to \] (r),(B) \[\to \] (s),(C) \[\to \] (p),(D) \[\to \] (q) done clear
  D)
  (A) \[\to \] (q),(B) \[\to \] (s),(C) \[\to \] (p),(D) \[\to \] (r) done clear
  View Solution play_arrow

• question_answer85)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is essential for living beings. There can be no life without water. There is an amount of water recommended by United Nations for drinking, washing, cooking and maintaining proper hygiene. What is the minimum amount of water recommended by United Nations?
  A)
  \[40\,l\]                                     done clear
  B)
  \[50\,l\] done clear
  C)
  \[100\,l\]                                   done clear
  D)
  \[75\,l\] done clear
  View Solution play_arrow

• question_answer86)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is essential for living beings. There can be no life without water. There is an amount of water recommended by United Nations for drinking, washing, cooking and maintaining proper hygiene. When is world water day celebrated?
  A)
  March 22         done clear
  B)
  March 30 done clear
  C)
  April 22           done clear
  D)
  May 21 done clear
  View Solution play_arrow

• question_answer87)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Water is essential for living beings. There can be no life without water. There is an amount of water recommended by United Nations for drinking, washing, cooking and maintaining proper hygiene. Which of the following maintains the balance of water in nature?
  A)
  Water cycle      done clear
  B)
  rain done clear
  C)
  clouds             done clear
  D)
  ground water done clear
  View Solution play_arrow

• question_answer88)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 There is an uneven distribution of water. Much of it has resulted due to human activities growing urbanization and development work has resulted in water shortage and supply of clean drinking water is affected. Which of the following human activities has resulted in depletion of ground water?
  A)
  building roads done clear
  B)
  cutting trees done clear
  C)
  cultivation practices done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer89)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 There is an uneven distribution of water. Much of it has resulted due to human activities growing urbanization and development work has resulted in water shortage and supply of clean drinking water is affected. When does depletion of water table occur?
  A)
  When there is insufficient rain done clear
  B)
  Overuse of ground water done clear
  C)
  Construction activities done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer90)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 There is an uneven distribution of water. Much of it has resulted due to human activities growing urbanization and development work has resulted in water shortage and supply of clean drinking water is affected. Which of the following should be practiced?
  A)
  rain water harvesting done clear
  B)
  Overuse of ground water done clear
  C)
  waste water done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer91)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true ?and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The going down of water table is called depletion of water table. Reason (R): The depletion of water table occurs if water is sufficiently replenished.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer92)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true ?and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Water is listed as one of the basic needs of animal and plant life. Reason R: Water forms the basis of life
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer93)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true ?and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Water cycle derives energy from the seen. Reason R: water from oceans, lakes, rivers etc. evaporate and change into water vapour.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer94)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true ?and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Some water moves over the surface of the ground into lakes and rivers. Reason R: Some water seeps into the ground.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer95)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Water harvesting is harvesting of water from tube wells. (ii) Rain water cannot be stored for future use (iii) Agriculture is the largest consumer of fresh water in India.
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer96)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Boiling removes soluble impurities from water. (ii) Fertilizers and sewage cause water pollution. (iii) Chlorination cleans and removes insoluble impurities from water.
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer97)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) Change of water vapour into water is called evaporation. (ii) Change of water into water vapour is called precipitation. (iii) Water cycle causes imbalance of water in nature.
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer98)
  DIRECTIONS: Read the following two statements carefully and choose the correct options. (i) There are four states of water. (ii) Glacier is the solid state of water. (iii) Water cannot change from one state to another.
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer99)
  DIRECTIONS: Carefully observe pictures given below and answer the following questions. The following diagram that shows a part of water cycle and answer the following questions. The process 'X' is known as
  A)
  condensation   done clear
  B)
  evaporation done clear
  C)
  melting             done clear
  D)
  precipitation done clear
  View Solution play_arrow

• question_answer100)
  DIRECTIONS: Carefully observe pictures given below and answer the following questions. The following diagram that shows a part of water cycle and answer the following questions. In the above diagram (given in previous question), water vapor goes into air by process 'Y' and 'X', forms clouds and then comes back to the ground in the form of rain.
  A)
  'Y' = Condensation process; 'X' = Evaporation done clear
  B)
  'Y' = the process by which the water disappears from a plate when kept in sunlight. 'X' = The process of Condensation done clear
  C)
  'Y' = the process by which water is lost by plants of the forest 'X' = Condensation done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer101)
  DIRECTIONS: Carefully observe pictures given below and answer the following questions. Carefully observe the given diagram and answer the following questions. The diagram above uses letters A, B, C and D to represent processes occurring in a water cycle. Identify the process that is shown by letter B?
  A)
  Evaporation                 done clear
  B)
  Condensation done clear
  C)
  Run off            done clear
  D)
  Precipitation done clear
  View Solution play_arrow

• question_answer102)
  DIRECTIONS: Carefully observe pictures given below and answer the following questions. Carefully observe the given diagram and answer the following questions. The diagram above uses letters A, B, C and D to represent processes occurring in a water cycle. What does letter D represent?
  A)
  Mountain slope            done clear
  B)
  Rain done clear
  C)
  Cloud burst                  done clear
  D)
  Run off done clear
  View Solution play_arrow