# 7th Class Science Water Question Bank

### done Water A Precious Resource

• A) 24th March

B) 28th February

C) 22nd March

D) 1st March

• A) 5 forms

B) 3 forms

C) no form

D) 2 form

• A) aquifer

B) infiltration

C) Bawri

D) water table

• A) drip irrigation

B) water harvesting

C) Bawri

D) Infiltration

• A) marble floor

B) cement floor

C) grass lawn

D) pucca floor

• A) scanty rainfall

B) increase in population

C) industrial activities

D) All of the above

• A) infiltration

B) Aquifer

C) water table

D) Bawri

• A) Raise embankments

B) raise dams

C) dig walls

D) none of these

• A) 5%

B) 20%

C) 1%

D) 30%

• A) water table

B) aquifer

C) freshwater

D) soil water

• A) (i) and (ii)

B) (iii) and (iv)

C) (i) and (iv)

D) All of these

• A) It is a new method arid has been recently tested in India.

B) It is a novel, low water use toilet that is safe for processing of human waste

C) In it the human excreta is treated by round worms and cockroaches

D) In if the human excreta is completely converted to vermi-cakes

• A) Jan, 26

B) March, 22

C) April, 14

D) None of these

• A) homes

B) industries

C) offices

D) All of these

• A) Cholera

B) Typhoid

C) Heart attack

D) Jaundice

• A) sewage

B) sullage

C) sludge

D) activated sludge

• A) waste water plant

B) Eucalyptus plant

C) urena plant

D) None of these

• A) Paper manufacturers

B) Wild life protection group

C) Environmentalists

D) Matches manufacturers

• A) is a process of waste water treatment.

B) refers to waste water that is released by homes, industries, hospitals etc.

C) refers to the rain water that run down the streets during heavy rains.

D) All the above

• A) organic substances

B) inorganic substances

C) Nutrients

D) All of these

• A) pesticides

B) herbicides

C) fruit and vegetable waste

D) All of these

• A) reduce pollutants in waste water to a level where nature can take care of it.

B) makes the waste water free of all pollutants

C) Both the above are correct

D) None of these is correct.

• A) kitchen

B) toilets

C) industrial organizations

D) commercial organizations

• A) (i), (iii), (ii)

B) (iii), (ii), (i)

C) (i), (ii), (iii)

D) (ii), (iii) (i)

• A) plastic packets

B) sand

C) grit

D) All of these

• A) Oils

B) Greases

C) Both of these

D) None of these

• A) 90%

B) 92%

C) 95%

D) 97%

• A) sludge

B) biogas

C) Both of these

D) None of these

• A) 1

B) 2

C) 3

D) 4

• A) changes from time to time

B) changes from place to place

C) goes down when rain is less

D) All of these

• A) WWTP

B) Greenhouse effect

C) Water cycle

D) Transpiration

• A) Glaciers

B) Sea water

C) Groundwater

D) Rain

• A) a forestation

B) Deforestation

C) Establishing thermal power plants

D) Cultivating high yielding crops

• A) chlorination

B) Boiling

C) Both (a) and (b)

D) filtration

• A) rainwater

B) potable water

C) water table

D) groundwater

• A) it contains dissolved salts

B) it contains sand

C) it contain iodine

D) it can not be cleaned

• A) rainwater

B) river water

C) groundwater

D) aquifer

• A) suspended impurities

B) dissolved gases like ${{\text{O}}_{\text{2}}}\And \text{C}{{\text{O}}_{\text{2}}}$

C) germs and bacteria

D) All of these

• A) Bawari

B) well

C) canal

D) tank

• A) turn off taps when not in use

B) use bucket and mug instead of pipe

C) Mop the floor instead of washing

D) All of these

• A) By using tube well

B) By digging a well

C) By hand pump

D) Both (a) and (c)

• A) ground table

B) water table

C) acquifer

D) None of these

• A) Infiltration

B) rain water flow

C) Water table

D) aquifers

•  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)

B) (A) $\to$ (q),(B) $\to$ (p),(C) $\to$ (s),(D) $\to$ (r)

C) (A) $\to$ (r),(B) $\to$ (s),(C) $\to$ (p),(D) $\to$ (q)

D) (A) $\to$ (s),(B) $\to$ (r),(C) $\to$ (q),(D) $\to$ (p)

•  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)

B) (A) $\to$ (q),(B) $\to$ (p),(C) $\to$ (r),(D) $\to$ (s)

C) (A) $\to$ (p),(B) $\to$ (q),(C) $\to$ (s),(D) $\to$ (r)

D) (A) $\to$ (q),(B) $\to$ (p),(C) $\to$ (s),(D) $\to$ (r)

• A) Most of water available on earth is not fit for human consumption.

B) The water present in seas is far away from most of the population.

C) Rivers get flooded and the water is wasted

D) None of the above

• A) Sea water

B) Ground water

C) Freshwater

D) None of these

• A) March, 22

B) April, 8

C) March, 8

D) None of these

• A) in ice caps at the poles of the earth.

B) in snow-covered mountains

C) in glaciers

D) All of the above

• A) remains constant at a place throughout the year.

B) remains constant at a place depending upon its distance from seas.

C) Both the above are correct.

D) None of the above is correct.

• A) condensation

B) evaporation

C) transportation

D) transpiration

• A) seepage

B) infiltration

C) ground filtration

D) None of these

• A) spring

B) aquifer

C) bore well

D) None of these

• A) water present in seas, rivers etc.

B) water found below the water table.

C) water that covers about 71% of earth's surface.

D) none of these

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Statement (i) is correct while statement (ii) is incorrect.

B) Statement (ii) is correct while statement (i) is incorrect.

C) Both statements are correct.

D) Both statements are incorrect.

• A) Statement (i) is correct while statement (ii) is incorrect.

B) Statement (ii) is correct while statement (i) is incorrect.

C) Both statements are correct.

D) Both statements are incorrect.

• A) Statement (i) is correct while statement (ii) is incorrect.

B) Statement (ii) is correct while statement (i) is incorrect.

C) Both statements are correct.

D) Both statements are incorrect.

• A) A

B) B

C) C

D) D

• A) Increase in population

B) Rapid growth of industries

C) Heavy rain fall

D) Mismanagement of water resources

• A) in lakes and rivers of the world remain constant.

B) under the ground remains constant

C) in the seas and oceans of the world remains constant.

D) of the world remains constant.

• A) propagate about the natural resource.

B) make people aware of this dwindling natural resource.

C) create awareness about the availability of water in the world.

D) celebrate it as a long festival.

• A) It refers to the place where ground water is stored between the layers of hard rock above water table.

B) It refers to the place where ground water is stored between the layers of hard rock below the water table.

C) Both the above are correct.

D) None of these is correct

• A) varies from places to place

B) may change even at a given place

C) Both the above are correct

D) None of these is correct

• A) 3%

B) 2.1%

C) 1.14%

D) 0.006%

• A) potable water

B) saline water

C) distilled water

D) decanted water

• A) sugar has been added to tap water

B) tap water contains dissolved gases and salts in it

C) Chemical treatment of tap water

D) None of the above is correct.

• A) aquifer

B) infiltration

C) condensation

D) None of these

• A) irrigation

B) fountain irrigation

C) drip irrigation

D) All of these

• A) 20 liters per day

B) 50 liters per day

C) 100 liters per day

D) 200 liters per day

• A) foul waste

B) sludge waste

D) None of these

• A) water brought home recently.

B) water which makes us energetic and fresh if we drink it

C) water that is fit for human consumption.

D) All of the above are correct.

• A) refers to cycling of water among its three forms that keeps total amount of water on earth constant.

B) essential for various forms of water to change from one form to other.

C) taking water from one place to another and bring it back to the original place after completing a fall cycle.

D) All of the above

• A) going down of water table.

B) the increase in depth of water table

C) Both the above are correct

D) None of the above is correct

• A) to get a crop of water

B) the use of rain water to recharge ground water

C) the use of rain water to discharge ground water

D) None of these

• A) Constructing factories and houses

C) Deforestation

D) All of these

• A) Precipitation

B) Evaporation

C) Transpiration

D) Photosynthesis

• A) dissolved hydrogen

B) dissolved oxygen

C) dissolved nitrate

D) mineral salts

• A) irrigation

B) harvesting of flood water

C) supply of drinking water

D) All of these

•  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)

B) (A) $\to$ (r),(B) $\to$ (s),(C) $\to$ (p),(D) $\to$ (q)

C) (A) $\to$ (r),(B) $\to$ (p),(C) $\to$ (q),(D) $\to$ (s)

D) (A) $\to$ (q),(B) $\to$ (s),(C) $\to$ (p),(D) $\to$ (r)

•  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)

B) (A) $\to$ (r),(B) $\to$ (s),(C) $\to$ (q),(D) $\to$ (p)

C) (A) $\to$ (r),(B) $\to$ (s),(C) $\to$ (p),(D) $\to$ (q)

D) (A) $\to$ (q),(B) $\to$ (s),(C) $\to$ (p),(D) $\to$ (r)

• A) $40\,l$

B) $50\,l$

C) $100\,l$

D) $75\,l$

• A) March 22

B) March 30

C) April 22

D) May 21

• A) Water cycle

B) rain

C) clouds

D) ground water

B) cutting trees

C) cultivation practices

D) All of these

• A) When there is insufficient rain

B) Overuse of ground water

C) Construction activities

D) All of these

• A) rain water harvesting

B) Overuse of ground water

C) waste water

D) none of these

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Both A and R are true and R is the correct explanation of A.

B) Both A and R are true but R is not the correct explanation of A.

C) A is true but R is false.

D) A is false but R is true.

• A) Statements (i) and (iii) are incorrect but (ii) is correct.

B) Statements (i) and (ii) are incorrect but (iii) is correct.

C) All statements are correct.

D) All statements are incorrect.

• A) Statements (i) and (iii) are incorrect but (ii) is correct.

B) Statements (i) and (ii) are incorrect but (iii) is correct.

C) All statements are correct.

D) All statements are incorrect.

• A) Statements (i) and (iii) are incorrect but (ii) is correct.

B) Statements (i) and (ii) are incorrect but (iii) is correct.

C) All statements are correct.

D) All statements are incorrect.

• A) Statements (i) and (iii) are incorrect but (ii) is correct.

B) Statements (i) and (ii) are incorrect but (iii) is correct.

C) All statements are correct.

D) All statements are incorrect.

• A) condensation

B) evaporation

C) melting

D) precipitation

• A) 'Y' = Condensation process; 'X' = Evaporation

B) 'Y' = the process by which the water disappears from a plate when kept in sunlight. 'X' = The process of Condensation

C) 'Y' = the process by which water is lost by plants of the forest 'X' = Condensation

D) All of these

• A) Evaporation

B) Condensation

C) Run off

D) Precipitation