7th Class Science Sample Paper

done Science Sample Paper - 3 Total Questions - 37    [Download]

• question_answer1)

  Choose the correct option:

  (i)  Algae is:

   
  A)
  Parasite                               
  done clear
  B)
  Saprotroph       
  done clear
  C)
  Autotroph      
  done clear
  D)
  None of these
  done clear
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• question_answer2)

  Choose the correct option:

  (ii) Saliva converts starch into:

   
  A)
  Fats                                     
  done clear
  B)
  Sugar
  done clear
  C)
  Proteins    
  done clear
  D)
  Minerals
  done clear
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• question_answer3)

  Choose the correct option:

  (iii) Which one of the following is not a variety of silk?

   
  A)
  Nalli       
  done clear
  B)
  Tassar       
  done clear
  C)
  Muga      
  done clear
  D)
  Organza
  done clear
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• question_answer4)

  Choose the correct option:

  (iv) Heat is a form of:

   
  A)
  Energy  
  done clear
  B)
  Light             
  done clear
  C)
  Electricity      
  done clear
  D)
  Work
  done clear
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• question_answer5)

  Choose the correct option:

  (v) The medicine used for treating indigestion is:

   
  A)
  Anti biotic           
  done clear
  B)
  Anti-acid          
  done clear
  C)
  Antacid         
  done clear
  D)
  Analgesic
  done clear
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• question_answer6)

  Choose the correct option:

  (vi) Crystallization is a process to obtain:

   
  A)
  Pure solids only  
  done clear
  B)
  Pure liquids only
  done clear
  C)
  Pure solids and liquids                      
  done clear
  D)
  Solid or powder
  done clear
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• question_answer7)

  Choose the correct option:

  (vii) The climate found in Kerala is:

   
  A)
  Very hot and wet     
  done clear
  B)
  Wet
  done clear
  C)
  Hot and dry        
  done clear
  D)
  Moderately hot and dry
  done clear
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• question_answer8)

  Choose the correct option:

  (viii) The winds from oceans which carry water and bring rain are called:

   
  A)
  Cyclone             
  done clear
  B)
  Typhoon         
  done clear
  C)
  Monsoon       
  done clear
  D)
  None of these
  done clear
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• question_answer9)

  Choose the correct option:

  (ix) Availability of water and minerals in the soil for maximum absorption by roots is in the:

   
  A)
  B-horizon           
  done clear
  B)
  C-horizon        
  done clear
  C)
  A-horizon      
  done clear
  D)
  Surface of soil
  done clear
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• question_answer10)

  Choose the correct option:

  (x)  Removal of metabolic waste from body is termed as:

   
  A)
  Ingestion            
  done clear
  B)
  Egestion         
  done clear
  C)
  Excretion       
  done clear
  D)
  Elimination
  done clear
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• question_answer11)
  (i) Define speed.
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• question_answer12)
  (ii) Which property of a conducting wire is utilised in making electric fuse?
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• question_answer13)
  (iii) What is concave mirror?
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• question_answer14)
  (iv) Write some sources of water.
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• question_answer15)
  (v) What is crown of a tree?
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• question_answer16)
  (vi) Name two inorganic impurities present in sewage.
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• question_answer17)
  What are acid rain?
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• question_answer18)
  How do we define climate of a place?
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• question_answer19)
  Why on hot summer day does the soil seem to shimmer?
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• question_answer20)
  What is the relationship between pulse and heart beat?
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• question_answer21)
  What is vegetative propagation?
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• question_answer22)
  Write the ways to minimize water wastage.
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• question_answer23)
  What are the harmful effects of releasing untreated sewage in water bodies?
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• question_answer24)
  Enumerate the precautions to be taken while reading a clinical thermometer.
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• question_answer25)
  Write three differences between an organic acid and a mineral add.
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• question_answer26)
  Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.
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• question_answer27)
  What is the difference between rate of percolation and the amount of water retained?
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• question_answer28)
  Explain an anaerobic respiration in yeast and in our muscles.
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• question_answer29)
  Describe various methods used to measure time in earlier days.
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• question_answer30)
  When the current is switched on through a wire, a compass needle kept nearby gets deflected from its N ? S position. Explain.
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• question_answer31)
  State three differences between a convex and a concave lens.
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• question_answer32)
  People say that nothing goes waste in a forest. Can you explain. How?
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• question_answer33)
  What is meant by the following terms?
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• question_answer34)
  Explain the soil profile.
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• question_answer35)
  Write the differences between respiration and photosynthesis
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• question_answer36)
  Draw the ray diagrams for images formed by a concave mirror under three different positions of the objects.
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• question_answer37)
  Describe the various steps involved in waste water treatment.
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