Solved papers for JEE Main & Advanced AIEEE Solved Paper-2004

done AIEEE Solved Paper-2004 Total Questions - 2

• question_answer1) Consider the following nuclear reactions \[_{92}^{238}M\to _{y}^{x}N+2_{2}^{4}He;_{y}^{x}N\to _{B}^{A}L+2{{\beta }^{+}}\] The number of neutrons in the element L is
  A)
  142      
  done clear
  B)
                                         144                        
  done clear
  C)
  140                        
  done clear
  D)
         146
  done clear
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• question_answer2) The half-life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the mass remaining after 24 h undecayed is
  A)
  1.042g  
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  B)
                         2.084 g 
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  C)
         3.125 g          
  done clear
  D)
         4.167 g
  done clear
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