Solved papers for JEE Main & Advanced JEE Main Solved Paper-2016

done JEE Main Solved Paper-2016 Total Questions - 1

• question_answer1) The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :- [JEE Main Solved Paper-2016 ]
  A)
  Iron                                       
  done clear
  B)
  Fluoride
  done clear
  C)
  Lead                     
  done clear
  D)
  Nitrate
  done clear
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