7th Class Science Sample Paper

done Science Olympiad Model Test Paper-18 Total Questions - 40    [Download]

• question_answer1)
  Match the following:

  1.	Croton	(A)	Bacteria
  2.	Rhizobium	(B)	Parasitic plant
  3.	Dodder	(C)	Insectivorous
  4.	Pitcher plant	(D)	Variegated leaves

  A)
  1 - A, 2 - B, 3 - D, 4 - C
  done clear
  B)
  1 - A, 2 - D, 3 - B, 4 - C
  done clear
  C)
  1 - C, 2 - A, 3 - B, 4 - D
  done clear
  D)
  1 - D, 2 - A, 3 - B, 4 - C
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer2)
  Which one of the following plants has bisexual flowers?
  A)
  Rose     
  done clear
  B)
  Mustard
  done clear
  C)
  Petunia
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer3)
  Choose the correct symbol for Dalton's symbol for Oxygen.
  A)
   
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer4)
  Convert \[\text{95 }\!\!{}^\circ\!\!\text{ F}\] to\[\text{ }\!\!{}^\circ\!\!\text{ C}\].
  A)
  \[\text{35 }\!\!{}^\circ\!\!\text{ C}\]
  done clear
  B)
  \[\text{45 }\!\!{}^\circ\!\!\text{ C}\]
  done clear
  C)
  \[20{}^\circ C\]
  done clear
  D)
  \[\text{25 }\!\!{}^\circ\!\!\text{ C}\]
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer5)

  Angeleena: A compound can be broken down into its constituents elements.

  Robert: The properties of a compound are different from those of its constituents elements.

  Who is correct?

  A)
  Angeleena
  done clear
  B)
  Robert
  done clear
  C)
  Both are correct
  done clear
  D)
  Both are incorrect
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer6)

  Consider the following statements:

  Statement 1: Autotrophic organisms make their own food from simple raw materials available in the environment.

  Statement 2: The process of photosynthesis can be performed only when plants or large algae have green pigment called chlorophyll.

  Which one of the following is correct about the above statements?

  A)
  Statement 1 is true and 2 is false
  done clear
  B)
  Statement 1 is false and 2 is true
  done clear
  C)
  Both statements are true
  done clear
  D)
  Both statements are false
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer7)
  Name the organ which is used by amoeba to catch food.
  A)
  Tentacles
  done clear
  B)
  Pseudopodia
  done clear
  C)
  Cilia
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer8)
  Which one of the following is the first step in order to obtain wool fibre from a sheep?
  A)
  Sorting
  done clear
  B)
  Combing
  done clear
  C)
  Shearing
  done clear
  D)
  Spinning
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer9)
  Which one of the following is an inflammable substance?
  A)
  Petrol
  done clear
  B)
  Alcohol
  done clear
  C)
  LPG
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer10)
  _______are groups of atoms of different elements that combine as single unit, but cannot exist independently.
  A)
  Radicals
  done clear
  B)
  Isotopes
  done clear
  C)
  Isobars
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer11)
  Which one of the following is used as an indicator to know that the given solution is acidic or basic?
  A)
  
  done clear
  B)
  
  done clear
  C)
  
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer12)
  Which one of the following process involves depositing a layer of zinc on iron for preventing rusting?
  A)
  Galvanization
  done clear
  B)
  Crystallization
  done clear
  C)
  Solidification
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer13)
  Which one of the following is an example of double displacement reaction?
  A)
  \[{{N}_{2}}+3{{H}_{2}}\to 2N{{H}_{3}}\]
  done clear
  B)
  \[Mg(s)+2HCl(aq)\to MgC{{l}_{2}}(aq)+{{H}_{2}}(g)\]
  done clear
  C)
  \[NaCl+AgN{{O}_{3}}\to AgCl+NaN{{O}_{3}}\]
  done clear
  D)
  Both a and b
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer14)
  Which one of the following types of thermometer has the standard temperature range given in the picture below?
  A)
  Laboratory thermometer
  done clear
  B)
  Clinical thermometre
  done clear
  C)
  Digital thermometre
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer15)
  A rock is placed in the measuring cylinder filled with water as shown in the picture below. Find the volume of the rock.
  A)
  \[40\,c{{m}^{3}}\]
  done clear
  B)
  \[20\,c{{m}^{3}}\]
  done clear
  C)
  \[15\,c{{m}^{3}}\]
  done clear
  D)
  \[10\,c{{m}^{3}}\]
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer16)
  A period of violent weather with strong winds and usually rain is called:
  A)
  Storm
  done clear
  B)
  Lightning
  done clear
  C)
  Thunder
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer17)
  Which one of the following steps will help us in prevention of soil pollution?
  A)
  The use of polyethylene bags should be avoided.
  done clear
  B)
  The use of pesticides in agriculture should be minimized.
  done clear
  C)
  Used plastic and metal objects should be sent to factories for recycling.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer18)
  Choose the correct statement about the chemical reaction given below. \[N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\to N{{a}_{2}}S{{O}_{4}}+{{H}_{2}}O+C{{O}_{2}}\]
  A)
  Sodium carbon reacts with hydroxide to form sodium oxide, water and carbon dioxide.
  done clear
  B)
  Sodium cobalt reacts with nitric acid to form sodium nitrous, water and carbon dioxide.
  done clear
  C)
  Sodium carbonate reacts with sulfuric acid to form sodium sulphate, water and carbon dioxide.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer19)
  The tiny holes through which breathing takes place in an insect is known as :
  A)
  Gills
  done clear
  B)
  Pores
  done clear
  C)
  Spiracles
  done clear
  D)
  Stomata
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer20)
  The respiration in roots of a green plant occurs by the exchange of gases through:
  A)
  Root hairs
  done clear
  B)
  Chlorophyll
  done clear
  C)
  Spiracles
  done clear
  D)
  Stomata
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer21)
  Which one of the following carry blood from the rest of the body to the heart?
  A)
  Veins
  done clear
  B)
  Capillaries
  done clear
  C)
  Arteries
  done clear
  D)
  All of these
  done clear
  E)
   None of these
  done clear
  View Answer play_arrow

• question_answer22)
  In the digestive system of a cow, food that is swallowed first goes into the chamber marked by X in the given figure. Name the chamber.
  A)
  Rumen
  done clear
  B)
  Cud
  done clear
  C)
  Small intestine
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer23)
  Match the following:

  1.	RBC	(A)	Is the liquid part of blood
  2.	WBC	(B)	Cell that carry oxygen
  3.	Plasma	(C)	Carry blood to the heart
  4.	Veins	(D)	Fight against infections

  A)
  1 - A, 2 - D, 3 - B, 4 - C
  done clear
  B)
  1 - D, 2 - B, 3 - A, 4 - C
  done clear
  C)
  1 - B, 2 - D, 3 - A, 4 - C
  done clear
  D)
  1 - C, 2 - D, 3 - A, 4 - B
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer24)
  We cannot swim much deep into the water bodies as deep water exerts enough force to crush our body. Why the atmospheric pressure does not effect our body in the same way?
  A)
  Fluids inside our body exerts as much pressure outwards as the outside air pressure exerts on us.
  done clear
  B)
  Fluids inside our body do not exerts as much pressure outwards as the outside air pressure exerts on us.
  done clear
  C)
  Water temperature causes the difference
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer25)
  A car is moving with the speed of 30 km/h. How long will it take to cover the distance of 150 km?
  A)
  2 hours
  done clear
  B)
  5 hours
  done clear
  C)
  7 hours
  done clear
  D)
  9 hours
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer26)
  Methew and Sam perform an experiment in laboratory to separate the mixture of iron and sulphur, by using magnet. They heat the mixture till a black substance, namely iron sulphide is formed and bring a metal near the iron sulphide. What they will observe?
  A)
  The black substance gets attracted towards the magnet.
  done clear
  B)
  Iron attracts the magnet.
  done clear
  C)
  Sulphur attracts the magnet.
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer27)
  Resistance depends on_______.
  A)
  Thickness of wire
  done clear
  B)
  Length of wire
  done clear
  C)
  Material of wire
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer28)
  Name the tiny filtering units of the kidney.
  A)
  Nephrons
  done clear
  B)
  Bile
  done clear
  C)
  Neuron
  done clear
  D)
  Guard cells
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer29)
  Current drawn from an electricity source depends on which one of the following factors?
  A)
  Volt-ampere lagging of the connected load.
  done clear
  B)
  Volt-ampere leading of the connected load.
  done clear
  C)
  Volt-ampere rating of the connected load.
  done clear
  D)
  Hardware used in the connected load.
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer30)
  Look at the following figure and choose the correct options to replace A and B. \[ICEWATERSTEAM\]
  A)
  A - Condensation, B - Melting
  done clear
  B)
  A - Melting, B - Condensation
  done clear
  C)
  A - Evaporation, B - Condensation
  done clear
  D)
  A - Condensation, B - Melting
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer31)
  Match the following :

  1.	Copper	(A)	Light travels in a straight line
  2.	Plastic	(B)	Conductor
  3.	Rainbow forms	(C)	Insulator
  4.	Rectilinear propagation	(D)	Due to dispersion of light

  A)
  1 - B, 2 - C, 3 - D, 4 - A
  done clear
  B)
  1 - C, 2 - D, 3 - A, 4 - B
  done clear
  C)
  1 - C, 2 - D, 3 - B, 4 - A
  done clear
  D)
  1 - A, 2 - C, 3 - D, 4 - B
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer32)
  Which one of the following mirror shows the phenomenon of lateral inversion?
  A)
  Plane mirror
  done clear
  B)
  Concave mirror
  done clear
  C)
  Convex mirror
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer33)
  Which one of the following properties is not correct about the image that is formed, when an object is placed beyond the centre of curvature of a concave mirror?
  A)
  The image is real.
  done clear
  B)
  The image is inverted.
  done clear
  C)
  The image is larger than the object.
  done clear
  D)
  The image is formed in front of the mirror.
  done clear
  E)
   None of these
  done clear
  View Answer play_arrow

• question_answer34)
  During the waste water treatment, water is first passed through vertical bars, followed by settling tanks. It is known as______.                  
  A)
  Clarifier
  done clear
  B)
  Grit chamber                              
  done clear
  C)
  Aeration tank
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer35)
  Look at the following picture of an electric bell. The part of picture labelled by letter X is called:
  A)
  Electromagnet
  done clear
  B)
  Metal spring             
  done clear
  C)
  Armature
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer36)
  The underground layer of soil and permeable rocks in which water collects under the ground is called:
  A)
  Recharge tube
  done clear
  B)
  Store house
  done clear
  C)
  Aquifer
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer37)

  Macdonald: All real image are larger than the object.

  Donald: Real image can be larger, shorter and equal to the object. Hence, all real image are not larger than the object.

  Who is correct?

  A)
  Macdonald
  done clear
  B)
  Donald
  done clear
  C)
  Both are correct
  done clear
  D)
  Both are incorrect
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer38)

  Which one of the following statements is correct?

  Statement 1: The ground surface of forest is called forest floor.

  Statement 2: The forest floor has many kinds of small leafless plants.

  A)
  Statement 1
  done clear
  B)
  Statement 2
  done clear
  C)
  Both statements are true
  done clear
  D)
  Both statements are false
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer39)
  You have been given the number of batteries with their volt ratings. You need to operate an electric appliance which works on 36 V. Which one of the following is the correct connection of the given number of batteries to obtain 36 V supply?
  A)
  
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow

• question_answer40)
  Which one of the following is the lowest layer of vegetation in the forests?
  A)
  Canopy
  done clear
  B)
  Understory
  done clear
  C)
  Herb layer
  done clear
  D)
  All of these
  done clear
  E)
  None of these
  done clear
  View Answer play_arrow