8th Class Science Sample Paper

done Science Sample Paper-10 Total Questions - 37    [Download]

• question_answer1)

  Choose the correct option:

  (i) Wild buffalo is an endangered species because

  A)
  Its population is diminishing.
  done clear
  B)
  It has become extinct.
  done clear
  C)
  It is found exclusively in a particular area.
  done clear
  D)
  Its poaching is strictly prohibited.
  done clear
  View Answer play_arrow

• question_answer2)

  Choose the correct option:

  (ii) The thread-like structures present in the nucleus are:

  A)
  nucleolus            
  done clear
  B)
                    genes
  done clear
  C)
  chromosomes     
  done clear
  D)
                     ribosomes
  done clear
  View Answer play_arrow

• question_answer3)

  Choose the correct option:

  (iii) After fertilisation, the resulting cell which gives rise to a new individual is the:

  A)
  Embryo           
  done clear
  B)
                     Ovum
  done clear
  C)
  Foetus                
  done clear
  D)
                     Zygote
  done clear
  View Answer play_arrow

• question_answer4)

  Choose the correct option:

  (iv) Structure present in the cell which is responsible for determination of the sex of a baby is:

  A)
  Cytoplasm      
  done clear
  B)
                     Cell membrane
  done clear
  C)
  Nucleus              
  done clear
  D)
                     Chromosomes
  done clear
  View Answer play_arrow

• question_answer5)

  Choose the correct option:

  (v) Adrenaline is produced by the:

  A)
  Pancreas            
  done clear
  B)
                    Thyroid Gland
  done clear
  C)
  Adrenal Gland   
  done clear
  D)
                     All of these
  done clear
  View Answer play_arrow

• question_answer6)

  Choose the correct option:

  (vi) An object is vibrating at 50 Hertz. What is its time period?

  A)
  0.02s   
  done clear
  B)
                     2s
  done clear
  C)
  0.2s                 
  done clear
  D)
                     20.0s
  done clear
  View Answer play_arrow

• question_answer7)

  Choose the correct option:

  (vii) Which one of the following solutions will not conduct electricity?

  A)
  lemon juice   
  done clear
  B)
                     Vinegar
  done clear
  C)
  tap water            
  done clear
  D)
                     Vegetable oil
  done clear
  View Answer play_arrow

• question_answer8)

  Choose the correct option:

  (viii) Major earthquakes are likely to occur in:

  A)
  North East India 
  done clear
  B)
                     Rajasthan
  done clear
  C)
  Rann of Kutch     
  done clear
  D)
                     Orissa
  done clear
  View Answer play_arrow

• question_answer9)

  Choose the correct option:

  (ix) Which of the following is NOT a member of the solar system?

  A)
  An asteroid         
  done clear
  B)
                     A satellite
  done clear
  C)
  A constellation   
  done clear
  D)
                     A comet
  done clear
  View Answer play_arrow

• question_answer10)

  Choose the correct option:

  (x) Sun appears to move from east to west around the earth. This means that earth rotates from:

  A)
  East to West       
  done clear
  B)
                     North to South
  done clear
  C)
  West to East    
  done clear
  D)
                     West to North
  done clear
  View Answer play_arrow

• question_answer11)
  (i) What happens to the air in the bicycle tube, when it has a puncture?                                                        
  View Answer play_arrow

• question_answer12)
  (ii) What is the contact force?                                                                                                                                                                             
  View Answer play_arrow

• question_answer13)
  (iii) Why does a matchstick catch fire when it is rubbed on a rough surface?                                                  
  View Answer play_arrow

• question_answer14)
  (iv) What is the hearing range of human ears?                                                                                                                                          
  View Answer play_arrow

• question_answer15)
  (v) What is distilled water?                                                                                                                      
  View Answer play_arrow

• question_answer16)
  (vi) Name two destructive phenomena?                                                                                                    
  View Answer play_arrow

• question_answer17)
  Why is Seema suggested Reema to use LED instead of bulb in testing a tester thrown liquid having low electrical conductivity?
  View Answer play_arrow

• question_answer18)
                                                                Whenever we fall ill due to infection, the doctor gives us a tablet or injection to cure the disease. What are those tablets or injections and how the medicine cures us?                                                                                     
  View Answer play_arrow

• question_answer19)

  Hydrochloric acid is taken in a test tube and a piece of zinc metal is put into it. The collected gas evolved in the test tube is tested by bringing it near the burning matchstick.

  (a) Which is the gas evolved in the test tube after the reaction?

  (b) What happened to the burning matchstick when it is brought near to the mouth of the test tube.

  View Answer play_arrow

• question_answer20)
  Groundwater also gets polluted by sewage. How?
  View Answer play_arrow

• question_answer21)
                                                                                                                                      What is the Sun?           
  View Answer play_arrow

• question_answer22)
                                                              Which part of the eye gets affected if someone is suffering from cataract? How is it treated?                          
  View Answer play_arrow

• question_answer23)
  If air and cloud are good conductors of electricity. Do you think lightning could occur? Explain.                        
  View Answer play_arrow

• question_answer24)
  A chemical compound is produced by the method of electrolysis. Give an example.                                        
  View Answer play_arrow

• question_answer25)
  Two astronauts are floating close to each other in space. Can they talk to each other without using any special device? Give reasons.                                                                                                                                    
  View Answer play_arrow

• question_answer26)
                                

  Fig. shows a man with a parachute. Name the force which is responsible for his downward motion.

  Will he come down with the same speed without the parachute?

  View Answer play_arrow

• question_answer27)
  Match the Column A with the Column B:                                                                                                                                    

  	Column A		Column B
  (a)	Protozoa	(1)	Nitrogen fixation
  (b)	Rhizobium	(2)	Root nodules
  (c)	Legume	(3)	Paramecium
  		(4)	Curd formation

  View Answer play_arrow

• question_answer28)
  What is soil fertility? Mention some method by which soil fertility can be replenished.                          
  View Answer play_arrow

• question_answer29)
  Why are salt and edible oils also called preservatives? Name two chemicals that are used as common preservatives.
  View Answer play_arrow

• question_answer30)
                                                                                                                                         How do vaccines work?  
  View Answer play_arrow

• question_answer31)

  Categorize the following materials into 'can be recycled' and 'cannot be recycled' :

  Telephone instruments, toys, cooker handles, carry bags, ball point pens, plastic bowls, electric wire covering, plastic chairs and electrical switches.

   
  View Answer play_arrow

• question_answer32)
    Arrange the following wastes as biodegradable and non-biodegradable.                                                           Peel of vegetables and fruits, leftover food stuff, paper, cotton cloth, wood, woollen clothes. Tin, aluminium and plastic bags.
  View Answer play_arrow

• question_answer33)
  Explain, why fossil fuels are exhaustible natural resources.                                                                          
  View Answer play_arrow

• question_answer34)

  Observe the following figures.
  (a)	(b)
  (c)	(d)
  (i) Identify the stages (a) to (d) in figures during development of human baby.
  (ii) Arrange the stages in correct sequence of development.
  (iii) Explain the development that takes place in any one stage.

  View Answer play_arrow

• question_answer35)
  What is the difference between noise and music? Can music become noise sometimes?                                 
  View Answer play_arrow

• question_answer36)
  Write the structure and function of human eye.
  View Answer play_arrow

• question_answer37)
                                                              Suggest three measures to protect ourselves from lightning.       
  View Answer play_arrow