6th Class Science Air Around us Question Bank

done Air Around us Total Questions - 52

• question_answer1)
  Which of the following statement(s) is/are correct?
  A)
  Air is present everywhere done clear
  B)
  We can feel air done clear
  C)
  Both the above done clear
  D)
  None of these done clear
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• question_answer2)
  Which of the following statement(s) is/are correct?
  A)
  The moving air is called wind. done clear
  B)
  We can find the direction in which air is moving at a place. done clear
  C)
  Weather cock is used to find the direction in which air is moving at a particular place. done clear
  D)
  All of the above done clear
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• question_answer3)
  Which of the following statement(s) is/are correct?
  A)
  Air is a mixture of many gases done clear
  B)
  Air is a homogeneous mixture done clear
  C)
  Air is a pure substance done clear
  D)
  Only (a) and (b) are correct done clear
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• question_answer4)
  Which of the following statement(s) is/are correct?
  A)
  In air percentage of nitrogen by volume is77% done clear
  B)
  In air percentage of oxygen by volume is20% done clear
  C)
  In air percentage of carbon dioxide is only2.0% done clear
  D)
  In air percentage of water and argon is 1.0% done clear
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• question_answer5)
  Which of the following statement(s) is/are correct?
  A)
  Air is not a matter as it cannot be seen done clear
  B)
  Air is incompressible done clear
  C)
  Air exerts pressure       done clear
  D)
  All of the above done clear
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• question_answer6)
  Which of the following statement(s) is/are correct?
  A)
  The percentage of oxygen in air inhaled and exhaled by us remains same done clear
  B)
  Plants use more of oxygen in respiration and produce no oxygen in any of its processes done clear
  C)
  Plants do not need oxygen for respiration done clear
  D)
  All of the above done clear
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• question_answer7)
  Which of the following statement(s) is/are correct?
  A)
  The planet earth is surrounded by a thin layer of air. done clear
  B)
  The thin layer of air that surrounds earth extends only up to two kilometres below the surface of earth. done clear
  C)
  This thin layer of air that surrounds ear this no importance for living beings. done clear
  D)
  All of the above done clear
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• question_answer8)
  Which of the following statement(s) is/are correct?
  A)
  The percentage of nitrogen in air varies from place to place on the earth. done clear
  B)
  The percentage of oxygen in air varies from place to place on the earth. done clear
  C)
  Both the above are correct done clear
  D)
  All of the above done clear
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• question_answer9)
  Which of the following statement(s) is/are correct?
  A)
  The animals that live under water cannot use the atmospheric air for their respiration. done clear
  B)
  The aquatic animals do not need air for respiration. done clear
  C)
  The aquatic animals use carbon dioxide dissolved in water for their respiration. done clear
  D)
  All the above are incorrect. done clear
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• question_answer10)
  Which of the following statement(s) is/are correct?
  A)
  Carbon dioxide is a colourless gas done clear
  B)
  Oxygen is an odorless gas done clear
  C)
  Air contains both oxygen and carbon dioxide done clear
  D)
  All of the above done clear
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• question_answer11)
  Which of the following statement(s) is/are   correct?
  A)
  Plants and animals are interdependent. done clear
  B)
  Plants and animals depend on each other for exchange of oxygen. done clear
  C)
  Plants and animals depend on each other for exchange of carbon dioxide. done clear
  D)
  All of the above done clear
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• question_answer12)
  Which of the following statements) is/are correct?
  A)
  Smoke contains suspended solid particles done clear
  B)
  Smoke is generally harmful done clear
  C)
  Both the above are correct done clear
  D)
  None of the above done clear
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• question_answer13)
  Which of the following statement(s) is/are correct?
  A)
  We cannot observe the presence of dust particles in air done clear
  B)
  Amount of dust particles in air vary from time to time done clear
  C)
  Both the above are correct done clear
  D)
  All of the above done clear
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• question_answer14)
  Farmers plough their fields before they plant seeds because
  A)
  it loosens the soil and allows the air to enter into the spaces between soil particles done clear
  B)
  the sprouting seed will be able to use the trapped air done clear
  C)
  plants will absorb some air through their roots and also take in water and minerals from the soil done clear
  D)
  All of the above done clear
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• question_answer15)
  Which of the following statement(s) is/are correct?
  A)
  Plants consume more oxygen and produce less oxygen. done clear
  B)
  Plants consume less oxygen and produce more oxygen. done clear
  C)
  Plants consume the same amount of oxygen as they produce. done clear
  D)
  Plants consume a large amount of oxygen during photosynthesis and produce a large amount of carbon dioxide during photo-synthesis. done clear
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• question_answer16)
  Which of the following statement(s) is/are correct?
  A)
  We make use of wind energy to rotate a wind mill done clear
  B)
  Windmill is used to generate electricity done clear
  C)
  Windmill is used to run flour mills done clear
  D)
  All of the above done clear
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• question_answer17)
  Which of the following statement(s) is/are correct?
  A)
  Air plays an important role in water cycle. done clear
  B)
  Birds can fly due to presence of air. done clear
  C)
  Both the above are correct done clear
  D)
  None of these done clear
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• question_answer18)
  When charcoal is burnt in a closed room, it gets suffocating. The gas that is mainly responsible to cause suffocation is
  A)
  Nitrogen                       done clear
  B)
  Carbon monoxide done clear
  C)
  Carbon dioxide            done clear
  D)
  None of these done clear
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• question_answer19)
  If you take water in a glass tumbler and put some ice in it, you will observe some water dropletson the outer surface of tumbler. This shows that
  A)
  air occupies space done clear
  B)
  air contains dust particles done clear
  C)
  water vapours are present in air done clear
  D)
  air has mass done clear
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• question_answer20)
  The percentage of which gas is maximum in inhaled air?
  A)
  Nitrogen           done clear
  B)
           Oxygen done clear
  C)
  Carbon dioxide            done clear
  D)
  Other gases                done clear
  View Solution play_arrow

• question_answer21)
  The percentage of which gas is maximum in exhaled air?           
  A)
  Nitrogen           done clear
  B)
  Oxygen                   done clear
  C)
  Carbon dioxide            done clear
  D)
  Other gases done clear
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• question_answer22)
  Guess who am I?   I am present in air. I enter your lungs when you inhale air. You cannot live without me. I give energy to your body.
  A)
  Hydrogen         done clear
  B)
  Oxygen                done clear
  C)
  Nitrogen          done clear
  D)
  Carbon dioxide done clear
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• question_answer23)
  Which of the following statements is wrong?
  A)
  Air contains dust, water vapour and smoke. done clear
  B)
  Ozone depletion causes skin cancer. done clear
  C)
  Acid rain is caused due to air pollution. done clear
  D)
  None of these done clear
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• question_answer24)
  Which of the following statements is correct?
  A)
  Air helps in pollination and in dispersal of seeds. done clear
  B)
  Air becomes denser as we go on mountains. done clear
  C)
  Air does not contain dust particles. done clear
  D)
  Water contains dissolved carbon dioxide. done clear
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• question_answer25)
  Which of the following can reduce air pollution?
  A)
  Planting more trees on roadsides done clear
  B)
  Using CNG in vehicles done clear
  C)
  Reducing the number of vehicles done clear
  D)
  All of the above done clear
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• question_answer26)
  Which gas protects us from ultraviolet rays of the sun?
  A)
  Oxygen           done clear
  B)
  Carbon dioxide done clear
  C)
  Ozone              done clear
  D)
  Nitrogen done clear
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• question_answer27)
  Which of the following plants do not have stomata? (i) Hydrilla (ii) Water lily (iii) All of these
  A)
  Only (ii) is correct        done clear
  B)
  Both (i) and (iii) done clear
  C)
  Only (i) is incorrect      done clear
  D)
  Only (iii) is correct done clear
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• question_answer28)
  A gas that is present in air and makes about 4/5th (by volume) of air. It is also not a supporter of combustion?
  A)
  Oxygen                        done clear
  B)
  Nitrogen done clear
  C)
  Water vapours done clear
  D)
  Hydrogen done clear
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• question_answer29)
  The gas used by aquatic animals for respiration?
  A)
  Dissolved nitrogen       done clear
  B)
  Dissolved oxygen done clear
  C)
  Dissolved air    done clear
  D)
  None of these done clear
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• question_answer30)
  Why are chimneys provided in factories?
  A)
  So as to locate the factories easily. done clear
  B)
  To take the harmful smoke and gases away from us. done clear
  C)
  To absorb the dust particles present in smoke before being released to the atmosphere. done clear
  D)
  All of the above done clear
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• question_answer31)
  Why do the earthworms come out of soil during heavy rains?
  A)
  They come out of soil so as to stay at some dry place. done clear
  B)
  They come out of soil for respiration. done clear
  C)
  They come out to see the nature when it is raining heavily. done clear
  D)
  None of the above done clear
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• question_answer32)
  Why are plants called oxygen producer?
  A)
  They consume oxygen for respiration. done clear
  B)
  They consume oxygen for photosynthesis. done clear
  C)
  They produce more oxygen during photo-synthesis as compared to that they consume for respiration. done clear
  D)
  All of the above done clear
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• question_answer33)
  DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

  Column-I (Name of gas in Air)	Column-II (% age of gas in air)
  A. Oxygen	(p) 20%
  B. Nitrogen	(q) 79%
  C. Carbon dioxide	(r) 0.04%
  D. Other gases	(s) Less than 1%

  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
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• question_answer34)
  DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

  Column-I	Column-II
  A. Nitrogen	(p) Produced when fuel is burnt
  B. Oxygen	(q) Supporter of combustion
  C. Carbon dioxide	(r) Not a supporter of combustion
  D. Smoke	(s) Colourless, odourless gas that may cause suffocation

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

• question_answer35)
  DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

  Column-I	Column-II
  A. Oxygen	(p) Consumed by plants and animals during photosynthesis
  B. Carbon dioxide	(q) Produced by animals during respiration
  C. Atmosphere	(r) Animals that live under water
  D. Aquatic animals	(s) Thin layer of air that surrounds the earth

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

• question_answer36)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 1 Until eighteenth century, people thought that air was just one substance. Now it has been experiment all proved that it is really not so. Air is a mixture of gases. Air is
  A)
  a mixture of liquids done clear
  B)
  a mixture of liquid and gases done clear
  C)
  a mixture of gases done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer37)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 1 Until eighteenth century, people thought that air was just one substance. Now it has been experiment all proved that it is really not so. Air is a mixture of gases. Air
  A)
  contains gases and solids done clear
  B)
  contains gases and liquids done clear
  C)
  contains no solid or liquid done clear
  D)
  All of the above done clear
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• question_answer38)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 1 Until eighteenth century, people thought that air was just one substance. Now it has been experiment all proved that it is really not so. Air is a mixture of gases. Which of the following statement(s) is/are correct?
  A)
  Water is present in air in vapour form done clear
  B)
  Water is not present in air done clear
  C)
  Water is present in air in liquid form done clear
  D)
  Water is present in air in solid form done clear
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• question_answer39)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 2 The earth is surrounded by a thin layer of air. Thin layer extends upto many kilometers above the surface of earth and is called atmosphere. Which of the following statement(s) is/are correct?
  A)
  The air surrounds the earth. done clear
  B)
  The thin layer of air that surrounds the earth extends only upto 2 kilometres above the surface of earth. done clear
  C)
  The thin layer of air that surrounds the earth extends upto 2 kms below the surface of earth. done clear
  D)
  All of the above are correct. done clear
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• question_answer40)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 2 The earth is surrounded by a thin layer of air. Thin layer extends upto many kilometers above the surface of earth and is called atmosphere. Which of the following statement(s) is/are correct?
  A)
  Atmosphere is essential for plants. done clear
  B)
  Atmosphere is essential for human beings. done clear
  C)
  Atmosphere is essential for life. done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer41)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 2 The earth is surrounded by a thin layer of air. Thin layer extends upto many kilometers above the surface of earth and is called atmosphere. Which of the following statement(s) is/are correct?
  A)
  Atmosphere is the envelope of air that surrounds the earth. done clear
  B)
  Atmospheric gases contain nitrogen and oxygen. done clear
  C)
  Both the above are correct. done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer42)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Which of the following is produced by animals during respiration?
  A)
  Oxygen            done clear
  B)
           Nitrogen done clear
  C)
  Carbon dioxide done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer43)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Which of the following is consumed by plants and animals during respiration?
  A)
  Oxygen  done clear
  B)
           Nitrogen done clear
  C)
  Carbon dioxide            done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer44)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Plants consume which of the following during photosynthesis?
  A)
  Oxygen            done clear
  B)
           Nitrogen done clear
  C)
  Carbondioxide done clear
  D)
           All of these done clear
  View Solution play_arrow

• question_answer45)
  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): Air is a homogeneous mixture of gases. Reason (R): The composition of every part of a homogeneous mixture is same.
  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
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• question_answer46)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Assertion (A): The gases nitrogen and oxygen together make 90% (by volume) of air. Reason (R): Air contains some dust particles.
  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
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• question_answer47)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Assertion (A): Oxygen helps in burning of substances. Reason (R): Burning of substances is a combustion process.
  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_answer48)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Assertion (A): Atmosphere is essential for life on earth. Reason (R): Carbon dioxide is a colourless, odourless gas present in air.
  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_answer49)
  DIRECTIONS: Read the passage(s) given below and answer the questions that follow Passage - 3 If in a closed room there is some material that is burning, you may have felt suffocation. This is due to excess carbon dioxide that may be accumulating in the room. Plants and animals consume oxygen for respiration and produce carbon dioxide. Assertion (A): Aquatic animals use dissolved air (or oxygen) in water for respiration. Reason (R): When fuel is burnt, a smoke is produced.
  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
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• question_answer50)
  The gas produced in the closed container is
  A)
  air                    done clear
  B)
  oxygen done clear
  C)
  nitrogen                       done clear
  D)
  carbon dioxide done clear
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• question_answer51)
  Which of these show the uses of air?
  A)
  (i)only              done clear
  B)
           (ii) only done clear
  C)
  (i), (ii) and (iii) done clear
  D)
  and (ii) only done clear
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• question_answer52)
  Which of the following statement is correct?
  A)
  \[\frac{2}{3}\]part is nitrogen and \[\frac{1}{3}\]rd part is oxygen done clear
  B)
   \[\frac{3}{4}\]part is oxygen and\[\frac{1}{4}\] part is nitrogen done clear
  C)
  \[\frac{1}{2}\]part is oxygen and\[\frac{1}{2}\] part is nitrogen and other done clear
  D)
  \[\frac{1}{5}\]part is oxygen and \[\frac{4}{5}\]part is nitrogen and other gases. done clear
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