Solved papers for JEE Main & Advanced JEE Main Paper (Held On 25 April 2013)

done JEE Main Paper (Held On 25 April 2013) Total Questions - 1

• question_answer1) A radioactive isotope having a half?life period of 3 days received after 12 days. If 3g of the isotope is left in the container, what would be the initial mass of the isotope?     JEE Main Online Paper ( Held On 25  April 2013 )
  A)
  12g                                        
  done clear
  B)
  36g
  done clear
  C)
  48g                                        
  done clear
  D)
  24g
  done clear
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