Solved papers for JEE Main & Advanced JEE Main Solved Paper-2015

done JEE Main Solved Paper-2015 Total Questions - 1

• question_answer1) The molecular formula of a commercial resin used for exchanging ions in water softening is \[{{C}_{8}}{{H}_{7}}S{{O}_{3}}Na\]  (Mol. wt. 206). \[C{{a}^{2+}}\] ions by the resin when expressed in mole per gram resin ? [JEE Main Solved Paper-2015 ]
  A)
  \[\frac{2}{309}\]
  done clear
  B)
  \[\frac{1}{412}\]
  done clear
  C)
  \[\frac{1}{103}\]
  done clear
  D)
  \[\frac{1}{206}\]
  done clear
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