Solved papers for JEE Main & Advanced AIEEE Solved Paper-2003

done AIEEE Solved Paper-2003 Total Questions - 2

• question_answer1) The radionuclide \[_{90}^{234}Th\] undergoes two successive \[\beta \] -decays followed by one \[\alpha \] -decay. The atomic number and the mass number respectively of the resulting radionuclide are     AIEEE  Solved  Paper-2003  
  A)
                          92 and 234    
  done clear
  B)
        94 and 230                          
  done clear
  C)
   90 and 230       
  done clear
  D)
        92 and 230
  done clear
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• question_answer2) the half-life of a radioactive isotope is 3 h. If the initial mass of the isotope were 256 g, the mass of it remaining undecayed after 18 h would be     AIEEE  Solved  Paper-2003
  A)
                          \[4.0\] g              
  done clear
  B)
        \[8.0\] g                              
  done clear
  C)
  \[12.0\] g                            
  done clear
  D)
  \[16.0\] g   
  done clear
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