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Science MCQ (1 Marks)

Water: A Precious Resource · CBSE STD 7 (CBSE - English Medium). 149 questions.

Questions · Page 2 of 3

MCQ (1 Marks)

MCQ 511 Mark
Which of the following is a way to use water economically?
  • A
    Construction of bawris.
  • B
    Rainwater harvesting.
  • ✓
    Drip irrigation.
  • D
    Infiltration.
Answer
Correct option: C.
Drip irrigation.
Among the given options, drip irrigation is a way to use water economically because the installation of drip irrigation techniques require less amount of water.
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MCQ 521 Mark
The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene per person per day is a minimum of:
  • A
    $5$ litres
  • B
    $15$ litres
  • C
    $30$ litres
  • ✓
    $50$ litres
Answer
Correct option: D.
$50$ litres
The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of $50$ litres per person per day.
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MCQ 531 Mark
From where the energy comes which powers the water cycle?
  • A
    From oceans
  • B
    From rains
  • ✓
    From sun
  • D
    From the hydraulic current
Answer
Correct option: C.
From sun
The energy which rotates the water between the oceans, atmosphere, and land comes from the sun.
The sun heats the water present on earth in rivers, ponds, and oceans.
This water evaporates in the form of vapor into the air $($atmosphere$).$
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MCQ 541 Mark
Which of the following inhibits the seepage of rainwater into ground?
  • ✓
    A Pukka floor
  • B
    Playground
  • C
    Grass lawn
  • D
    Forest land
Answer
Correct option: A.
A Pukka floor
The seepage of water is not possible in the case of pucca floors and concrete floors.
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MCQ 551 Mark
World water Day is celebrated on:
  • ✓
    $22nd$ March.
  • B
    $24th$ March.
  • C
    $28th$ February.
  • D
    $1$ March.
Answer
Correct option: A.
$22nd$ March.
$22nd$ March.
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MCQ 561 Mark
Which of the following water sources is used for drinking purposes?
  • A
    Sea water
  • B
    Glaciers
  • ✓
    Ground water
  • D
    None of these
Answer
Correct option: C.
Ground water
Groundwater is, in general, easier and cheaper to treat than surface water, because it tends to be less polluted and hence used for drinking purposes.
Sea-water contains dissolved salt in it, hence it is not generally used for drinking purposes as it's very difficult to purify.
Water stored in the form of glaciers mostly gets dissolved into seawater after melting rendering it unfit for drinking.
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MCQ 571 Mark
Water which falls from the clouds as rain or snow is called:
  • A
    Condensation.
  • ✓
    Precipitation.
  • C
    Infiltration.
  • D
    Transpiration.
Answer
Correct option: B.
Precipitation.
Precipitation.
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MCQ 581 Mark
The solid form of water is known as:
  • A
    Fog
  • B
    Dry ice
  • ✓
    Ice
  • D
    None of the above
Answer
Correct option: C.
Ice
The solid form of water is known as ice.
Fog is tiny water droplets are suspended in the air.
dry ice is solid form of carbon dioxide.
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MCQ 591 Mark
What is the water cycle?
  • A
    The process of water passing out from the surface of leaves of a plant.
  • B
    Water falling from clouds in the form of rain, freezing rain, sleet, snow, or hail.
  • ✓
    Movement of water from the atmosphere to the earth and then back to atmosphere.
  • D
    None of the above.
Answer
Correct option: C.
Movement of water from the atmosphere to the earth and then back to atmosphere.
The water cycle is the cyclic movement of water from the atmosphere to the earth and back to the atmosphere.
Various processes are involved in this cycle, namely, evaporation, transpiration, condensation, and precipitation.
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MCQ 601 Mark
Total earth's surface covered by water is:
  • ✓
    $71\%$
  • B
    $60\%$
  • C
    $85\%$
  • D
    $50\%$
Answer
Correct option: A.
$71\%$

The total earth's surface covered by water is $71\%.$

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MCQ 611 Mark
Some of the causes for the shortage of water are:
  • A
    Day by day increasing population.
  • B
    Growing irrigation requirement of agriculture.
  • C
    Rapid growth of industries.
  • ✓
    All the above.
Answer
Correct option: D.
All the above.
All the above.
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MCQ 621 Mark
Which of the following is traditional way to conserve water?
  • A
    Tube wells
  • ✓
    Bawris
  • C
    Rainwater Harvesting
  • D
    None of these
Answer
Correct option: B.
Bawris
Bawris
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MCQ 631 Mark
On which day the world water day is celebrated$?$
  • A
    $23rd$ March
  • ✓
    $22nd$ March
  • C
    $21st$ March
  • D
    None of these
Answer
Correct option: B.
$22nd$ March

World Water Day is an annual United Nations $(UN)$ observance day held on $22$ March that highlights the importance of fresh water.
The day is used to advocate for the sustainable management of freshwater resources.

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MCQ 641 Mark
Plants loose water in form of:
  • A
    Liquid
  • B
    Gases
  • C
    Snow
  • ✓
    Water vapour
Answer
Correct option: D.
Water vapour
Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.
Transpiration is essentially evaporation of water from plant leaves.
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MCQ 651 Mark
The large well like structure which is used in olden times for rainwater harvesting is called:
  • A
    Well
  • ✓
    Bawris
  • C
    Johad
  • D
    Check $-$ dams
Answer
Correct option: B.
Bawris
Bawris
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MCQ 661 Mark
Which of the following is not an effect of acute scarcity of water on plants?
  • A
    Shortage of food.
  • B
    Shortage of oxygen.
  • ✓
    Shortage of carbon dioxide.
  • D
    Shortage of rainfall.
Answer
Correct option: C.
Shortage of carbon dioxide.
Shortage of carbon dioxide.
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MCQ 671 Mark
Seeping of water into the soil is called:
  • ✓
    Infiltration
  • B
    Irrigation
  • C
    Depletion
  • D
    Replenishing
Answer
Correct option: A.
Infiltration
Seeping of water into the soil is called infiltration.
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MCQ 681 Mark
The process falling water in the form of rain, snow or hail is called:
  • A
    Sublimation
  • B
    Evaporation
  • C
    Condensation
  • ✓
    Precipitation
Answer
Correct option: D.
Precipitation
The process of falling water in the form of rain, snow, or hail is called precipitation.
Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail.
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MCQ 691 Mark
Top soil and petroleum are:
  • ✓
    Non $-$ renewable resources
  • B
    Water cycle
  • C
    Renewable resources
  • D
    None of these
Answer
Correct option: A.
Non $-$ renewable resources
Top soil and petroleum are non $-$ renewable resources.
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MCQ 701 Mark
Purest form of natural water is:
  • ✓
    Rainwater
  • B
    Ground water
  • C
    Sea water
  • D
    Spring water
Answer
Correct option: A.
Rainwater
Rain water is the purest form of natural water.
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MCQ 711 Mark
In water cycle, the maximum vaporization takes place:
  • ✓
    From oceans
  • B
    From rivers
  • C
    From streams
  • D
    From plants
Answer
Correct option: A.
From oceans
$86\%$ of global evaporation occurs from the ocean due to its large surface area which directly comes in contact with sun rays and gives maximum vaporization.
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MCQ 721 Mark
Snow and ice, are present as $........$ at the poles of the earth, snow-covered mountains, and glaciers.
  • A
    Liquid form
  • ✓
    The solid form
  • C
    The gaseous form
  • D
    None of the above
Answer
Correct option: B.
The solid form
Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas $($water vapour$)$ in the atmosphere.
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MCQ 731 Mark
Which of the following statement is or are incorrect?
  • A
    A huge amount of water is required for the construction work.
  • B
    The increasing population needs more and more water for its day$-$to$-$day activities.
  • C
    At the time of scanty rainfall much more ground water is drawn out by the people for various purposes.
  • ✓
    If there are less number of trees and plants in the forest, more rain water will seep into the ground.
Answer
Correct option: D.
If there are less number of trees and plants in the forest, more rain water will seep into the ground.
If there are less number of trees and plants in the forest, less rain water will seep into the ground.
Lesser number of trees and plants in the forest will bring less rainfall.
Deforestation leads to less rainfall as well as laser seepage of rainwater into the ground.
This depletes the water table.
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MCQ 741 Mark
The groundwater when collects between the layers of hard rocks is called:
  • ✓
    Aquifer.
  • B
    Water table.
  • C
    Bawri.
  • D
    None of these.
Answer
Correct option: A.
Aquifer.
Aquifer.
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MCQ 751 Mark
This is level of ground water:
  • A
    Aquifer
  • ✓
    Water table
  • C
    Sea level
  • D
    Both $(a)$ and $(b)$
Answer
Correct option: B.
Water table

Level of water is water table.

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MCQ 761 Mark
"Water water every where, Nor any drop to drink." From where does these lines are taken from?
  • A
    War and Peace
  • ✓
    Rime of the Ancient Mariner
  • C
    Hind Swaraj
  • D
    None of the Above
Answer
Correct option: B.
Rime of the Ancient Mariner
"Water water everywhere, Nor any drop to drink." These are the famous lines of the poem Rime of the Ancient Mariner written by $S.T.$ Coleridge in $1798.$
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MCQ 771 Mark
Seas and oceans are full of water on earth. However, a very small percentage of water present on earth is available for us.This percentage is roughly:
  • ✓
    $0. 006\%$
  • B
    $0. 06\%$
  • C
    $0. 6\%$
  • D
    $6\%$
Answer
Correct option: A.
$0. 006\%$

The total amount of fresh water available for use is about $0.006\%$ of the total water present on earth as about $97.4\%$ of the total water on earth is in seas and ocean and $2\%$ water is present in the form of glaciers and in polar ice caps.

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MCQ 781 Mark
In a quiz competition, you are asked a question where you have to choose the statement which is$/$ are incorrect?
  • A
    Depletion means reduction or lowering the amount of something.
  • B
    We draw groundwater for our use with the help of wells, tube wells, and hand pumps.
  • C
    When it rains, the rain water seeps into the ground and the groundwater is recharged.
  • ✓
    None of the above
Answer
Correct option: D.
None of the above
None of the above
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MCQ 791 Mark
What percentage of the earth’s surface is covered with water?
  • A
    About $51$ percent
  • B
    About $21$ percent
  • ✓
    About $71$ percent
  • D
    About $81$ percent
Answer
Correct option: C.
About $71$ percent

Rain is the source of water on earth. And about $71\%$ of the earth’s surface is covered with water.

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MCQ 801 Mark
Water is chlorinated to:
  • ✓
    Kill germs
  • B
    Change colour
  • C
    Soften it
  • D
    Improve its taste
Answer
Correct option: A.
Kill germs
Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water.
This method is used to kill bacteria, viruses and other microbes in water.
In particular, chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, and typhoid.
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MCQ 811 Mark
Which state of India receives least rainfall?
  • A
    Gujarat
  • ✓
    Rajasthan
  • C
    Chirapunji
  • D
    West Bengal
Answer
Correct option: B.
Rajasthan
Rajasthan receives least rainfall among all.
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MCQ 821 Mark
Which of the following is the purest form of natural water?
  • A
    River water
  • B
    Filtered water
  • ✓
    Rain water
  • D
    Mineral water
Answer
Correct option: C.
Rain water
Rainwater is considered to be the purest form of natural water as it directly comes from the condensation of water droplets.
During vaporization by the sun, the water evaporates from oceans, seas, rivers leaving behind all the impurities and salts and form the cloud.
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MCQ 831 Mark
The water below the ground is known as:
  • ✓
    Groundwater
  • B
    Pure water
  • C
    Polluted water
  • D
    None of these
Answer
Correct option: A.
Groundwater
Groundwater, water that occurs below the surface of Earth, where it occupies all or part of the void spaces in soils or geologic strata.
It is also called subsurface water to distinguish it from surface water, which is found in large bodies like the oceans or lakes or which flows overland in streams.
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MCQ 841 Mark
When is the 'World Water Day' celebrated every year?
  • A
    $23$ December
  • ✓
    $22$ March
  • C
    $14$ April
  • D
    $02$ November
Answer
Correct option: B.
$22$ March

World Water Day is celebrated on $22$ March every year to attract the attention of everybody towards the importance of conserving water.

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MCQ 851 Mark
Which of the following process will be affected due to water scarcity on plants?
  • A
    Evaporation and photosynthesis.
  • B
    Photosynthesis and respiration.
  • C
    Evaporation and respiration.
  • ✓
    Photosynthesis and transpiration.
Answer
Correct option: D.
Photosynthesis and transpiration.
Plants need water to obtain nutrients from the soil, and to make food by the process of photosynthesis.
The scarcity of water will affect the nutrient uptake by the plants and the process of food making photosynthesis in plants.
The plants will not be able to make sufficient food for themselves and for animals.
Remember, plants help in bringing rain by releasing a lot of water vapor into the atmosphere through transpiration. Scarcity of water for plants will reduce transpiration also.
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MCQ 861 Mark
Which of the following does not deplete the water table at a place?
  • A
    Increasing number of tubewells.
  • B
    Increasing deforestation.
  • C
    Scanty rainfall.
  • ✓
    Increasing snowfall.
Answer
Correct option: D.
Increasing snowfall.
Increasing snowfall.
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MCQ 871 Mark
In a science quiz competition, Shalu are asked a question where she had to choose the statement which was$/$ were correct?
  • A
    The main source of groundwater is the rain.
  • B
    The water found below the water table is called groundwater.
  • C
    The underground layer of soil and permeable rocks in which water collects under the ground is called an aquifer.
  • ✓
    All the above
Answer
Correct option: D.
All the above
All the above
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MCQ 881 Mark
Which of the following is not a way to conserve water?
  • ✓
    Replace
  • B
    Reduce
  • C
    Reuse
  • D
    Recycle
Answer
Correct option: A.
Replace
Replace is not a way to conserve water.
Following are the three ways to conserve water:
Reduce: Use only as much water as you need. Dont waste water.
Reuse: Water which is left after washing the vegetables and cloths should be used for mopping.
Recycle: Sewage and effluents should be treated before being flown into rivers or ponds.
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MCQ 891 Mark
The ultimate source of water on the earth is:
  • A
    Oceans and seas
  • B
    Spring and wells
  • C
    Rivers and lakes
  • ✓
    Rain
Answer
Correct option: D.
Rain
The ultimate source of water on the earth is rain as every water cycle begins with rain and ends in rain.
Rain water is the purest form of water that is available to us.
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MCQ 901 Mark
On which of the following day is World Water Day observed?
  • ✓
    $22$ March.
  • B
    $14$ November.
  • C
    $2$ October.
  • D
    $21$ December.
Answer
Correct option: A.
$22$ March.
$22$ March is celebrated as the World Water Day.
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MCQ 911 Mark
What from this source cannot be consumed?
  • A
    Lake
  • B
    Rain
  • C
    River
  • ✓
    Sea
Answer
Correct option: D.
Sea
This source cannot be consumed from sea.
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MCQ 921 Mark
Which of the following is considered as a primary source of water?
  • ✓
    Rainwater
  • B
    River water
  • C
    Pond water
  • D
    Groundwater
Answer
Correct option: A.
Rainwater
Rainwater is the primary source of water. It is considered as a pure and fresh form of water.
It fills up rivers and ponds and also collects as groundwater.
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MCQ 931 Mark
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 where filled with water. The upper limit of this layer is called:
  • A
    Water level
  • ✓
    Water table
  • C
    Ground water
  • D
    Water limit
Answer
Correct option: B.
Water table
The upper limit of the layer where water is present between particles of soil and gaps between rocks is called water table and water below this layer is called groundwater.
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MCQ 941 Mark
Choose the correct option. The total water:
  • A
    In the lakes and rivers of the world remains constant.
  • B
    Under the ground remains constant.
  • C
    In the seas and oceans of the world remains constant.
  • ✓
    Of the world remains constant.
Answer
Correct option: D.
Of the world remains constant.
Of the world remains constant.
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MCQ 951 Mark
In which year was 'Ganga Action Plan' launched$?$
  • A
    $1986$
  • ✓
    $1985$
  • C
    $1988$
  • D
    $1990$
Answer
Correct option: B.
$1985$

An ambitious plan to save the river Ganga called the Ganga Action Plan was launched in $1985.$
It aimed to reduce the pollution levels in the river.

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MCQ 961 Mark
How many forms of water are there?
  • A
    Only one
  • B
    Only two
  • ✓
    Only three
  • D
    None of those
Answer
Correct option: C.
Only three
Only three
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MCQ 971 Mark
$........$ allows the water to seep in easily
  • A
    Pukka floor.
  • ✓
    Grass lawn.
  • C
    Cement floor.
  • D
    Marble Floor.
Answer
Correct option: B.
Grass lawn.
Grass lawn.
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MCQ 981 Mark
Which of the following statement is or are correct$?$
  • A
    Water is essential for the existence of life.
  • B
    Without water, there would be no living things on the earth.
  • C
    Actually about $71\%$ of the earth’s surface is covered with water.
  • ✓
    All the above
Answer
Correct option: D.
All the above
All the above
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MCQ 991 Mark
The process of ground water getting stored between the layers of hard rock below the water table is known as:
  • A
    Infiltration.
  • ✓
    Aquifer.
  • C
    Water table.
  • D
    Bawri.
Answer
Correct option: B.
Aquifer.
Aquifer.
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MCQ 1001 Mark
What role you can play to minimize wastage of water:
  • A
    Get the leaking taps repaired immediately because these taps waste a lot of water.
  • B
    Take bath by filling water in a bucket and not directly under the flowing tap.
  • C
    Use the water from washing rice, vegetables or fruits for watering the plants at home.
  • ✓
    All the above
Answer
Correct option: D.
All the above
All the above
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MCQ (1 Marks) - Page 2 - Science STD 7 Questions - Vidyadip