7th Class Science Sample Paper

done Science Olympiad Model Test Paper-11 Total Questions - 40    [Download]

• question_answer1)
  The inner lining of ______ secretes mucus, hydrochloric acid and digestive juice.
  A)
  Oesophagus
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  B)
  Stomach
  done clear
  C)
  Small intestine
  done clear
  D)
  Large intestine
  done clear
  E)
  None of these
  done clear
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• question_answer2)
  After hatching, silkworms come out of the perforations in search of ______.
  A)
  Air
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  B)
  Sunlight
  done clear
  C)
  Food
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer3)
  Which one of the followings is an insulator?
  A)
  Silver
  done clear
  B)
  Plastic
  done clear
  C)
  Iron
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer4)
  Heat can travel through ______.
  A)
  Conduction
  done clear
  B)
  Convection
  done clear
  C)
  Radiation
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer5)
  ______rain also corrodes metal, marble, statues and monuments.
  A)
  Alkalies
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  B)
  Acid
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  C)
  Base    
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer6)
  Which one of the followings are basic substances?
  A)
  Lemon Juice
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  B)
  Orange Juice
  done clear
  C)
  Soap Solution
  done clear
  D)
  Vinegar
  done clear
  E)
  None of these
  done clear
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• question_answer7)
  Which one of the followings is a mineral acids?
  A)
  \[HCl\]
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  B)
  \[HN{{O}_{3}}\]
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  C)
  \[{{H}_{2}}S{{O}_{4}}\]
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer8)
  Which one of the following fruits contains citric acid?
  A)
  
  done clear
  B)
  
  done clear
  C)
   
  done clear
  D)
  All of these
  done clear
  E)
   None of these
  done clear
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• question_answer9)
  Consider the following two statements:

  Statement A: Sodium bicarbonate is also called baking soda.

  Statement B: \[NaHC{{O}_{3}}\] is also called baking soda.

  Which of the following is correct with respect to the above statements?

  A)
  Statement A is False and Statement B is True.
  done clear
  B)
  Both, Statement A and Statement B are True.
  done clear
  C)
  Both, Statement A and Statement B are False.
  done clear
  D)
  Statement B is False and Statement A is True.
  done clear
  E)
  None of these
  done clear
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• question_answer10)
  Match the following:

  1.	Displacement	A	One substance breaks down into two substances
  2.	Decomposition	B	Two or more reactants add up to from a single product
  3.	Neutralisation	C	One element displaces another
  4.	Combination	D	An acid reacts with a base

  A)
  1 - D, 2 - C, 3 - B, 4 - A 
  done clear
  B)
  1 - D, 2 - A, 3 - C, 4 - B
  done clear
  C)
  1 - C, 2 - A, 3 - D, 4 - B  
  done clear
  D)
  1 - C, 2 - D, 3 - A, 4 - B
  done clear
  E)
  None of these
  done clear
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• question_answer11)
  Which one of the following substance is formed when vinegar and baking soda are mixed together?
  A)
  Sodium acetate
  done clear
  B)
  Carbon dioxide
  done clear
  C)
  Water
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer12)
  The major elements of weather at a place are:
  A)
  Temperature
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  B)
  Pressure
  done clear
  C)
  Humidity
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer13)
  When condensation takes place high above ground, ______ is formed.
  A)
  Snow
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  B)
  Rain
  done clear
  C)
  Clouds
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer14)

  Consider the following two statements:

  Statement A: Cyclone has high speed wind swirling around a high pressure centre.

  Statement B: A cyclone is known as typhoon in Philippines.

  Which of the following is correct with respect to the above statements?

  A)
  Statement A is False and Statement B is True.
  done clear
  B)
  Both, Statement A and Statement B are True.
  done clear
  C)
  Both, Statement A and Statement B are False.
  done clear
  D)
  Statement B is False and Statement A is True.
  done clear
  E)
  None of these
  done clear
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• question_answer15)
  When air is filled in a closed container, it _____on the wall of the container.
  A)
  Exerts pressure
  done clear
  B)
  Does not exert pressure
  done clear
  C)
  Increases temperature
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer16)
  Fast moving air creates a region of:
  A)
  Low pressure     
  done clear
  B)
  High pressure
  done clear
  C)
  Moderate pressure
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer17)
  Which one of the following soils contains sufficient amount of humus?
  A)
  Sandy soil
  done clear
  B)
  Clayey soil
  done clear
  C)
  Loamy soil
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer18)

  Which one of the following statements is correct?

  Statement 1: Considerable amount of energy is produced in aerobic respiration.

  Statement 2: Much less amount of energy is produced in anaerobic respiration.

  A)
  Statement 1                  
  done clear
  B)
  Statement 2
  done clear
  C)
  Both statements are correct
  done clear
  D)
  Both statements are incorrect
  done clear
  E)
  None of these
  done clear
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• question_answer19)
  What would be the length between the pole and centre of curvature of a spherical mirror if focal length of the mirror is f?
  A)
  3f
  done clear
  B)
  4f  
  done clear
  C)
  5f
  done clear
  D)
  2f
  done clear
  E)
  None of these
  done clear
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• question_answer20)
  Human blood plasma contains about_____% water.
  A)
  30
  done clear
  B)
  50
  done clear
  C)
  75
  done clear
  D)
  90
  done clear
  E)
  None of these
  done clear
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• question_answer21)
  _____ are the thinnest blood vessels.
  A)
  Capillaries
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  B)
  Veins
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  C)
  Arteries
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer22)
  Which one of the following organs of circulatory system pumps the blood to all parts of body?
  A)
  Heart
  done clear
  B)
  Kidneys
  done clear
  C)
  Lungs
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer23)
  The pollen tube enters the ovule through a small opening called:
  A)
  Leaf buds
  done clear
  B)
  Micropyle
  done clear
  C)
  Placenta
  done clear
  D)
  Embryo sac
  done clear
  E)
  None of these
  done clear
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• question_answer24)
  All the sepals taken together are called:
  A)
  Calyx
  done clear
  B)
  Corolla
  done clear
  C)
  Pistil     
  done clear
  D)
  Stamen
  done clear
  E)
  None of these
  done clear
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• question_answer25)
  Convert 20 km/h into m/s.
  A)
  5.7 m/s
  done clear
  B)
  5.2 m/s
  done clear
  C)
  5.5 m/s
  done clear
  D)
  6.2 m/s
  done clear
  E)
  None of these
  done clear
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• question_answer26)
  Match the following:

  1.	Copper	(A)	N
  2.	Gold	(B)	Zn
  3.	Tungsten	(C)	Au
  4.	Zinc	(D)	W
  5.	Nitrogen	(E)	Cuprum

  A)
  1 - A, 2 - B, 3 - D, 4 - B, 5 - A
  done clear
  B)
  1 - D, 2 - C, 3 - E, 4 - B, 5 - A
  done clear
  C)
  1 - A, 2 - C, 3 - D, 4 - B, 5 - E
  done clear
  D)
  1 - E, 2 - C, 3 - D, 4 - B, 5 - A
  done clear
  E)
  None of these
  done clear
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• question_answer27)
  Bulb filament is made up of:
  A)
  Tungsten
  done clear
  B)
  Gold
  done clear
  C)
  Nichrome
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer28)
  What is current?
  A)
  Flow of water
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  B)
  Flow of electrons
  done clear
  C)
  Flow of heat
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer29)
  When the object is at the centre of curvature, the image formed by a concave mirror is:
  A)
  Real
  done clear
  B)
  Inverted
  done clear
  C)
  Same size as the object
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer30)
  _____ is the phenomenon of splitting of white light into its constituents colours.
  A)
  Reflection
  done clear
  B)
  Dispersion
  done clear
  C)
  Refraction
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer31)
  What is rectilinear propagation?
  A)
  Light travels in zigzag line.
  done clear
  B)
  Light travels in straight line.
  done clear
  C)
  Light travels in curve line.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer32)

  Peter: Aqua regia consists of 3 parts of hydrochloric acid and 1 part of nitric acid.

  Albert: Aqua regia is used to dissolve noble metals such as gold and platinum.

  Who is correct?

  A)
  Peter
  done clear
  B)
  Albert
  done clear
  C)
  Both are correct
  done clear
  D)
  Both are incorrect
  done clear
  E)
  None of these
  done clear
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• question_answer33)
  In the given picture, an empty flask is fixed to a stand in an upside down position over a beaker of water. Which one of the following conclusion can be drawn from the experiment when heat is applied to the empty flask?
  A)
  Molecules of gas attracts the water molecules.
  done clear
  B)
  Gases contracts on heating.
  done clear
  C)
  Gases expand on heating.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer34)

  Which one of the following statements is true?

  Statement 1: Different types of trees have crowns having different shapes and sizes.

  Statement 2: The major function of crown of a tree is to absorbs sun's light energy.

  A)
  Statement 1
  done clear
  B)
  Statement 2
  done clear
  C)
  Both statements are correct
  done clear
  D)
  Both statements are incorrect
  done clear
  E)
  None of these
  done clear
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• question_answer35)
  The layer of vegetation in a forest which is just below the understory is called:
  A)
  Canopy
  done clear
  B)
  Understory
  done clear
  C)
  Shrub layer
  done clear
  D)
  Herb layer
  done clear
  E)
  None of these
  done clear
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• question_answer36)
  Plants and organisms in forests are linked to each other by a process called ______ chain.
  A)
  Plants
  done clear
  B)
  Forest
  done clear
  C)
  Food
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer37)
  The organ given below receives oxygen dissolved in water. Name the organ.
  A)
  Lung
  done clear
  B)
  Skin
  done clear
  C)
  Gills
  done clear
  D)
  Root hair
  done clear
  E)
  None of these
  done clear
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• question_answer38)
  Which one of the following is true for the earths poles?
  A)
  12-hours day; 12-hours night.
  done clear
  B)
  18-hours day; 6-hours night.
  done clear
  C)
  6-months day; 6-months night.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer39)
  If A is more reactive than B, which one of the following is true?
  A)
  A will replace B from a salt of B.
  done clear
  B)
  B will replace A from a salt of A.
  done clear
  C)
  Both can displace each other from their salts.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
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• question_answer40)
  Which one of the following will expand more on heating?
  A)
  Gold    
  done clear
  B)
  Mercury
  done clear
  C)
  Water
  done clear
  D)
  Iron
  done clear
  E)
  None of these
  done clear
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