7th Class Science Sample Paper

done Science Olympiad Model Test Paper-8 Total Questions - 40    [Download]

• question_answer1)
  Liver is an important part of the digestive system. The liver of human body secretes which one of the following digestive juice?
  A)
  Bile juice
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  B)
  Potassium chloride
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  C)
  Pancreatic juice
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  D)
  Hydrochloride
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  E)
  None of these
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• question_answer2)
  Which one of the following is true for cud?
  A)
  Digested food    
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  B)
  Undigested food
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  C)
  Partially digested food
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  D)
  Partially undigested food
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  E)
  None of these
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• question_answer3)
  The name of the vitamins are given below. Which one of the following options is correct about the categorization of vitamins as water soluble and fat soluble elements? Vitamin A, Vitamin B, Vitamin C, Vitamin D, Vitamin E, Vitamin K
  A)
  Water soluble vitamins - Vitamin B, Vitamin C Fat soluble vitamins - Vitamin A, Vitamin D, Vitamin E, Vitamin K.
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  B)
  Water soluble vitamins - Vitamin A, Vitamin D, Vitamin E, Vitamin K Fat soluble vitamins - Vitamins B, Vitamins C
  done clear
  C)
  Water soluble vitamins - Vitamin D, Vitamin E, Vitamin C Fat soluble vitamins - Vitamin A, Vitamin B, Vitamin K
  done clear
  D)
  Fat soluble vitamins - Vitamin A, Vitamin B, Vitamin C Water soluble vitamins - Vitamin D, Vitamin E, Vitamin K
  done clear
  E)
  None of these
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• question_answer4)
  Wool is mostly obtained from which one of the following sources?
  A)
  Cellulose
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  B)
  Plants
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  C)
  Fruits of plants
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  D)
  Sheep
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  E)
  None of these
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• question_answer5)
  Rayon is known as synthetic fiber. The raw materials for making of rayon is obtained from which one of the following sources?
  A)
  Cotton plants    
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  B)
  Tree pulp
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  C)
  Sheep
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  D)
  Sisal
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  E)
  None of these
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• question_answer6)
  The temperature at which a liquid starts to convert into gas is known as_____.
  A)
  Melting point     
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  B)
  Freezing point
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  C)
  Boiling point
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  D)
  Condensation point
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  E)
  None of these
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• question_answer7)
  Name of some yarns are given below. Clothes made from which one of the following yarns is ideal for hot summer season?
  A)
  Woolen yarn
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  B)
  Silk yarn
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  C)
  Polyester yarn
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  D)
  Cotton yarn
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  E)
  None of these
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• question_answer8)
  The salt, which form a neutral solution on dissolving into water are called neutral salt. Choose the neutral salt from the following.
  A)
  Nitrogen sulphide
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  B)
  Sodium chloride
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  C)
  Ammonium chloride       
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  D)
  Ammonium sulphate
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  E)
  None of these
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• question_answer9)
  pH value of a solution is 10. What is the nature of the solution?
  A)
  Acid
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  B)
  Base
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  C)
  Neutral
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  D)
  All of these
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  E)
  None of these
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• question_answer10)
  Which one of the following conditions is not necessary for rusting of iron?
  A)
  Air
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  B)
  Water
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  C)
  Moisture
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  D)
  Paint
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  E)
  None of these
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• question_answer11)

  Which of the following statement is/are true for chemical changes?

  Statement 1: A chemical change is a permanent change.

  Statement 2: A lot of energy is either evolve or absorbed during a chemical change.

  A)
  Both the statement 1 and 2 are correct.
  done clear
  B)
  Statement 1 is correct and 2 is incorrect.
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  C)
  Statement 1 is incorrect and 2 is correct.
  done clear
  D)
  Both the statement 1 and 2 are incorrect.
  done clear
  E)
  None of these
  done clear
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• question_answer12)
  Which one of the following is the most common cause of changing weather on the surface of the Earth?
  A)
  Distance between the earth and the moon
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  B)
  Different angles of sun at different time
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  C)
  Rotation of the earth
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  D)
  Static state of the sun
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  E)
  None of these
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• question_answer13)
  The different regions of the Earth receive different amount of heat from the Sun. Which one of the following regions receives the maximum heat from the Sun?
  A)
  Polar region
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  B)
  Equator
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  C)
  Sea region
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  D)
  All of these
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  E)
  None of these
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• question_answer14)
  The distance between the Sun and the Earth is slightly varies during different times of the year. Which one of the following is the cause of the distance variation?
  A)
  The earth is tilted
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  B)
  Rotation of the earth
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  C)
  Rotation of the other planet
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  D)
  All of these
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  E)
  None of these
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• question_answer15)

  Codi: Plants produce carbon dioxide during respiration

  Jack: Only animals produce carbon dioxide

  Who of the above is correct?

  A)
  Codi     
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  B)
  Jack
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  C)
  Both are correct
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  D)
  Both are incorrect
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  E)
  None of these
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• question_answer16)
  The organ given below receives oxygen dissolved in water. Name the organ.
  A)
  Lung
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  B)
  Skin
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  C)
  Gills
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  D)
  Root hair
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  E)
  None of these
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• question_answer17)
  In carrying oxygen from the atmosphere to the cells, not only respiratory system but also circulatory system is involved. The organ shown below is the organ from where oxygen enters into circulatory system from respiratory system. Name the organ.
  A)
  Heart
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  B)
  Lung
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  C)
  Kidney
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  D)
  Brain
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  E)
  None of these
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• question_answer18)
  Our body has developed a complex respiratory system which can meet the demand of oxygen as per requirement, but it also has a drawback. What is that drawback. Chose from the given options.
  A)
  Through the respiratory system pathogens also may enter into our body
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  B)
  Rate of respiration cannot increase or decrease as per the requirement
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  C)
  It cannot filter the oxygen from air
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  D)
  It has no any defence system to counter the pathogens
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  E)
  None of these
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• question_answer19)
  ?Transportation of water from one tracheid to another takes place through their tapering ends?. Read the above statement and select by which one of the following options, 'tapering ends' given in the statement should be replaced?
  A)
  Vessels formed by the dead cells
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  B)
  Flat ends as ends of the tracheid cells joined together
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  C)
  Pits present on the cell
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  D)
  Selectively permeable cell wall
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  E)
  None of these
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• question_answer20)
  The cells of the lymph node, which eats germs, fragment of dead cell etc. and helps in protecting the body from diseases is shown in the figure given below. What is the name of the cell?
  A)
  RBC     
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  B)
  WBC
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  C)
  Lymphocyte
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  D)
  Antigens
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  E)
  None of these
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• question_answer21)
  Identify the organ given below, which is a part of human respiratory system. Name the organ.
  A)
  Lungs
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  B)
  Liver
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  C)
  Kidney
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  D)
  Heart
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  E)
  None of these
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• question_answer22)
  The method of vegetative propagation in which the terms "scion and stock" are used is shown in the figure given below. What is the name of this method?
  A)
  Cutting
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  B)
  Layering
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  C)
  Grafting
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  D)
  All of these
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  E)
  None of these
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• question_answer23)
  While studying the microbes found in pond water Jack gets a planaria and cuts it into two part, anterior and rest of the body part. After some days he notices that both the parts develop into two new Planarians. Which one of the following kinds of reproduction is shown by the planaria?
  A)
  Fission
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  B)
  Spore formation
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  C)
  Vegetative propagation   
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  D)
  Regeneration
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  E)
  None of these
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• question_answer24)
  "The given method of reproduction is not a sexual mode of reproduction". Choose your opinion from the following which you think is the better explanation to justify the above statement.
  A)
  Pulling down a branch of a plant and covering it with the soil is called layering method of vegetative propagation. Therefore, it is not a sexual reproduction.
  done clear
  B)
  The above picture shows the development of new plant from a branch. No involvement of male and female gametes has been shown in all.
  done clear
  C)
  In the above picture new plant is developing from the body of parent plant. In the sexual reproduction new plant never grows from the body of parent plant instead the new plant grows independently from the seed which formed after the fusion of male gamete with the female gamete. Therefore, it is asexual mode of reproduction
  done clear
  D)
  The above picture clearly shows that this is a asexual mode of reproduction
  done clear
  E)
  None of these
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• question_answer25)
  Which one of the following is true for the uniform speed?
  A)
  If speed of the object varies at different interval of time, the object has uniform speed
  done clear
  B)
  If speed of the object is constant at different interval of time, the object has uniform speed
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  C)
  If a moving object suddenly comes into rest, the object has uniform speed
  done clear
  D)
  All of these
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  E)
   None of these
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• question_answer26)
  Look at the following graph carefully and find whether the body is in uniform acceleration?  
  A)
  Yes                  
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  B)
  No
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  C)
  The graph does not give the information that the body is in uniform acceleration or not
  done clear
  D)
  All of these
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  E)
  None of these
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• question_answer27)
  A rainbow in the sky is the spectrum of colours. How many colours are involved in the formation of a spectrum?
  A)
  Ten
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  B)
  Seven
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  C)
  Eight    
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  D)
  All of these
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  E)
  None of these
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• question_answer28)
  A small object is placed behind the larger object. Which one of the following parts of shadow covers the entire part of the smaller object?
  A)
  Penumbra                     
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  B)
  Umbra
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  C)
  Shadow of smaller object
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  D)
  All of these     
  done clear
  E)
  None of these
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• question_answer29)
  There are two curvatures found in a convex lens. Which one of the following causes the zero optical power of the lens?
  A)
  Equal thickness of both the curvatures
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  B)
  Unequal thickness of both the curvatures
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  C)
  Equal distance between the focal point and center of the curvature
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  D)
  All of these
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  E)
  None of these
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• question_answer30)
  The earth's atmosphere is layered according to the availability of gases, temperature and altitude. Which one of the following layers is found between the thermosphere and stratosphere?
  A)
  Troposphere
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  B)
  Exosphere
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  C)
  Mesosphere
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  D)
  All of these
  done clear
  E)
  None of these
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• question_answer31)
  Sub polar low pressure belt is between \[50{}^\circ \] and \[70{}^\circ \] latitude. Polar high pressure belt of the earth is located at which one of the following latitude?
  A)
  \[30{}^\circ \]latitude towards north and south
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  B)
  \[60{}^\circ \] towards north and south
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  C)
  \[90{}^\circ \]towards north and south
  done clear
  D)
  All of these
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  E)
  None of these
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• question_answer32)
  The air that blows from north to south is called north wind. The origin of south wind is in which one of the following directions?
  A)
  North
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  B)
  East
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  C)
  South
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  D)
  All of these
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  E)
  (e)None of these
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• question_answer33)

  Which of the following statement is/are correct?

  Statement 1: Resistance of a wire is directly proportion to the length of the wire.

  Statement 2: Resistance of a wire is directly proportional to the area of cross section.

  A)
  Both the statement 1 and 2 are correct.
  done clear
  B)
  Statement 1 is correct and 2 is incorrect.
  done clear
  C)
  Statement 1 is incorrect and 2 is correct.
  done clear
  D)
  Both the statement 1 and 2 are incorrect.
  done clear
  E)
  None of these
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• question_answer34)
  Which one of the following electrical symbols is incorrect?
  A)
   
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  B)
   
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  C)
  
  done clear
  D)
  
  done clear
  E)
  None of these
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• question_answer35)
  Which one of the following is produced when microorganism acts upon the dead plants?
  A)
  Soil
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  B)
  Manure
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  C)
  Humus
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  D)
  Coal
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  E)
  None of these
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• question_answer36)
  Which one of the following is not the example of onsite sewage disposal system for human waste?
  A)
  Septic Tanks
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  B)
  Composting Pits
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  C)
  Chemical Toilets
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  D)
  Waste treatment Plant
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  E)
  None of these
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• question_answer37)
  Through which part of the plant, carbon dioxide from air enters in leave for photosynthesis?
  A)
  Xylem
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  B)
  Stomata
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  C)
  Phloem
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  D)
  Bark
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  E)
  None of these
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• question_answer38)
  Which one of the following plants is insectivorous?
  A)
  China Rose
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  B)
  Touch Me not
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  C)
  Pitcher Plant
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  D)
  Cactus
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  E)
  None of these
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• question_answer39)
  Which one of the following cell organelle contains DNA?
  A)
  Vacuole
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  B)
  SER
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  C)
  Ribosomes
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  D)
  Mitochondria
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  E)
  None of these
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• question_answer40)
  Which one of the following teeth helps in cutting and biting of food?
  A)
  Incisors
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  B)
  Canines
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  C)
  Premolars
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  D)
  Molars
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  E)
  None of these
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