8th Class Science Sample Paper

done Science Sample Paper-8 Total Questions - 37    [Download]

• question_answer1)

  Choose the correct options:

  (i) Which is not a Kharif crop?

  A)
  Paddy                          
  done clear
  B)
  Gram
  done clear
  C)
  Maize               
  done clear
  D)
         Soya bean
  done clear
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• question_answer2)

  Choose the correct options:

  (ii) Which is not classified as major group of the micro-organisms?

  A)
  Bacteria            
  done clear
  B)
         Fungi
  done clear
  C)
  Protozoa         
  done clear
  D)
         Plants
  done clear
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• question_answer3)

  Choose the correct options:

  (iii) Pick out the synthetic fibre from the following?

  A)
  Cotton                          
  done clear
  B)
  Nylon
  done clear
  C)
  Jute              
  done clear
  D)
         Wool
  done clear
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• question_answer4)

  Choose the correct options:

  (iv) Metals can be cut with a knife:

  A)
  Sodium and Iron
  done clear
  B)
         Potassium and Copper
  done clear
  C)
  Copper and Iron 
  done clear
  D)
  Sodium and Potassium
  done clear
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• question_answer5)

  Choose the correct options:

  (v) A black, tough and porous substance is:

  A)
  Coal tar
  done clear
  B)
                     Coal gas
  done clear
  C)
  Coke    
  done clear
  D)
         Diesel
  done clear
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• question_answer6)

  Choose the correct options:

  (vi) Which one of the following has the highest calorific value?

  A)
  Kerosene           
  done clear
  B)
         Biogas
  done clear
  C)
  LPG 
  done clear
  D)
         Petrol
  done clear
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• question_answer7)

  Choose the correct options:

  (vii) The Red Data Book keeps a record of all the

  (i) endemic species

  (ii) endangered plants

  (iii) extinct species

  (iv) endangered animals

  A)
  (i) & (ii)
  done clear
  B)
                     (ii) & (iii)
  done clear
  C)
  (iii) & (iv)       
  done clear
  D)
         (i) & (iv)
  done clear
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• question_answer8)

  Choose the correct options:

  (viii) The jelly-like fluid substance present in cells is called

  A)
  Protoplasm
  done clear
  B)
                     Chloroplast
  done clear
  C)
  Chromosome    
  done clear
  D)
         Cytoplasm
  done clear
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• question_answer9)

  Choose the correct options:

  (ix) In humans, the development of fertilised egg takes place in

  A)
  ovary
  done clear
  B)
                                 testes
  done clear
  C)
  oviduct  
  done clear
  D)
         uterus
  done clear
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• question_answer10)

  Choose the correct options:

  (x) Protruding part of the throat in a boy is called

   
  A)
  Voice box       
  done clear
  B)
  Larynx
  done clear
  C)
  Adam's Apple  
  done clear
  D)
  All of these
  done clear
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• question_answer11)
  (i) Write two physical properties of metals.                                                                                                
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• question_answer12)
  (ii) Define pressure and write its formula.                                                                                                                                                     
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• question_answer13)
  (iii) Name the part of the eye which gives colour to the eye.                                                            
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• question_answer14)
  (iv) What is the other name of voice box?                                                                                                                                                    
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• question_answer15)
  (v) Name the force that always opposes the applied force.                                                                           
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• question_answer16)
  (vi) Name the layer which is present outside the cell membrane in plant cell.                                        
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• question_answer17)
  What are petrochemicals?                                                                                               
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• question_answer18)
  What are the characteristics of an ideal fuel?                                                                                              
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• question_answer19)
  Draw a well labelled diagram of human sperm.                                                                              
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• question_answer20)

  (i) Name the tool used with a tractor for sowing seeds in the field.

  (ii) What is the advantage of using this tool?

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• question_answer21)
  What is an ecosystem?   
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• question_answer22)
  Mention any two features that are seen in boys and girls each to distinguish them from each other at puberty.    
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• question_answer23)

  Answer the following:

  (i) Which micro-organism is used in making curd from milk?

  (ii) Which micro-organism is used for making bread?

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• question_answer24)
  What is the full form of CNG and LPG?                                                                                                    
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• question_answer25)
  Define Tissue.    
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• question_answer26)
                                                                                                                          Complete the following chemical reaction: Carbon dioxide \[(C{{O}_{2}})\] + Water \[({{H}_{2}}O)\to ?\] Is it an acid or base.    
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• question_answer27)
              What are the effects of force?                                                                                                      
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• question_answer28)

  (i) Differentiate between an asteroid and a comet.

  (ii) (a) The planet which is farthest from the Sun is _____.

  (b) The planet which appears reddish in colour_____.

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• question_answer29)
  Mention three examples that show that friction produces heat.                                                         
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• question_answer30)
  List three sources of noise pollution in your locality.                                                                                    
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• question_answer31)
  Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?
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• question_answer32)
                                                                                      Level of air pollution is higher in metro cities. Mention the major causes responsible for this increase.                 
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• question_answer33)
                                                              What are the chemical effects of electric current? Explain with the help of an example.                                    
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• question_answer34)
  What do CFC's stand for? Name some devices where CFC's are used. Why CFC's are considered as pollutants?
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• question_answer35)
                                                                                                                                                  What is electroplating? What are its advantages?                                          
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• question_answer36)
                                                                                                  Explain the functions of plastids.                                                                                                                                                          
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• question_answer37)

  Observe the figure and answer the following questions:

  (i) Name the micro-organism and the group to which it belongs.

  (ii) Name the food items on which the organism grows.

  (iii) Does it grow well in dry or in moist conditions?

  (iv) Is it safe to eat infected bread?

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