Solved papers for SSC NCERT - Solved Paper-1

done NCERT - Solved Paper-1 Total Questions - 18

• question_answer1) Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings, if they reach the surface of the earth. What prevents them from reaching the surface of the earth?
  A)
   The Earth?s magnetic field diverts them towards its poles
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  B)
   Ozone layer around the earth reflects them back to outer space
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  C)
   Moisture in the upper layers of atmosphere prevents them from reaching the surface of the earth
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  D)
   None of the statements [a], [b] and [c] given above is correct.
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• question_answer2) Which one of the following types of waves are used in a night vision apparatus?
  A)
   Radio waves                 
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  B)
   Microwaves
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  C)
   Infra-red waves
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  D)
          None of the above
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• question_answer3) Which of the following pairs is/are correctly matched?

  	Theory/Law	-	Associated Scientist
  1.	Continental Drift	-	Edwin Hubble
  2.	Expansion of universe	-	Alfred Wegener
  3.	Photoelectric Effect	-	Albert Einstein

  Select the correct answer using the code given below: Codes:
  A)
   2 and 3           
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  B)
   3
  done clear
  C)
   2                                
  done clear
  D)
   1
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• question_answer4) How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
  A)
   \[183\,\,\times \,\,{{10}^{6}}\,\,nanometres\]
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  B)
   \[234\,\,\times \,\,{{10}^{6}}\,\,nanometres\]
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  C)
   \[183\,\,\times \,\,{{10}^{7}}\,\,nanometres\]
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  D)
   \[243\,\,\times \,\,{{10}^{7}}\,\,nanometres\]
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• question_answer5) Which of the following types is used by computed tomography employed for visualisation of the internal structure of human body?
  A)
   X-ray  
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  B)
   South waves
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  C)
   Magnetic resonance       
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  D)
   Radioisotopes
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• question_answer6) Who among the following invented Lasers?
  A)
   Theodore Maiman         
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  B)
   Detis Papin
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  C)
   William Morton
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  D)
          Francis Crick
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• question_answer7) Match List-I with List-II and select the correct answer using the codes given below the List:

  List ? I (characteristic)		List-II (Particle)
  A	Zero mass	1.	Positron
  B	Fractional charge	2.	Neutrino
  C	Fractional spin	3.	Quark
  D	Integral spin	4.	Phonon

  Codes:
  A)
   A-2, B-3, C-1, D-4        
  done clear
  B)
   A-3, B-2, C-4, D-1
  done clear
  C)
   A-2, B-3, C-4, D-1        
  done clear
  D)
   A-3, B-2, C-1, D-4        
  done clear
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• question_answer8) 

  Consider the following statements:

  In a nuclear reactor, self-sustained chain reaction is possible, because

  1. more neutrons are released in each of the fission reactions.

  2. the neutrons immediately take part in the fission process.

  3. the fast neutrons are slowed down by Graphite.

  4. every neutron released in the fission reaction initiates further fission.

  Which of these statements are correct?

  A)
   1, 2 and 3                    
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  B)
   1 and 3
  done clear
  C)
   2 and 4           
  done clear
  D)
   2, 3 and 4
  done clear
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• question_answer9) Which one of the following is NOT radioactive?
  A)
   Astatine           
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  B)
   Francium
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  C)
   Tritium            
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  D)
   Zirconium
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• question_answer10) Which one of the following does a TV remote control unit use to operate a TV set?
  A)
   Light waves
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  B)
   Sound waves
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  C)
   Microwaves      
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  D)
   Radio waves
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• question_answer11) Cobalt-60 is commonly used in radiation therapy because it merits
  A)
   alpha rays                    
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  B)
   beta rays
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  C)
   gamma rays                 
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  D)
   X-rays
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• question_answer12) Which one of the following elements is essential for the construction of nuclear reactors?
  A)
   Cobalt 
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  B)
   Nickel
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  C)
   Zirconium        
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  D)
   Tungsten
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• question_answer13) Match the following:

  	Table-I		Table-II
  A.	Dr. Raja Ramanna	1.	Botany-Chemistry
  B.	Dr. M.S. Swaminathan	2.	Nuclear Physics
  C.	Prof. U.R. Rao	3.	Thermodynamics & Astro Physics
  D.	Prof. Meghnath Saha	4.	Space Research
  		5.	Agriculture

  Codes:
  A)
   A-3, B-5, C-2, D-1        
  done clear
  B)
   A-2, B-1, C-4, D-3
  done clear
  C)
   A-2, B-5, C-4, D-3        
  done clear
  D)
   A-3, B-1, C-4, D-2
  done clear
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• question_answer14) Which of the following nuclear power plants has the highest total installed capacity?
  A)
   Kakrapara                    
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  B)
   Kaiga
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  C)
   Kudankulam     
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  D)
   Tarapur
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• question_answer15) A breeder reactor is that which-
  A)
   does not require fissionable material at all
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  B)
   uses only heavy water
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  C)
   Produces more fissionable material than it bums
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  D)
   none of these
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• question_answer16) Which one of the following is used as a moderator in the nuclear reactor?
  A)
   Thorium          
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  B)
   Graphite
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  C)
   Radium           
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  D)
   Ordinary water
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• question_answer17) The fuel used in Fast Breeder Test Reactor at Kalpakkam is-
  A)
   enriched uranium          
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  B)
   thorium
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  C)
   plutonium        
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  D)
   tungsten
  done clear
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• question_answer18) Radioactive substance emits-
  A)
   alpha rays        
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  B)
   beta rays
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  C)
   gamma rays                 
  done clear
  D)
   all the above
  done clear
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