Solved papers for JEE Main & Advanced JEE Main Online Paper (Held on 9 April 2013)

done JEE Main Online Paper (Held on 9 April 2013) Total Questions - 1

• question_answer1)                                 Sodium Carbonate cannot be used in place of   \[{{({{\operatorname{NH}}_{4}})}_{2}}{{\operatorname{CO}}_{3}}\] for the identification of \[C{{a}^{2+}},B{{a}^{2+}}\] and \[\operatorname{S}{{r}^{2+}}\] ions (in group V) during mixture analysis because:                   JEE Main Online Paper (Held On 09 April 2013)
  A)
                  \[M{{g}^{2+}}\]ions will also be precipitated                
  done clear
  B)
                  Concentration of \[CO_{3}^{2-}\] ions is very low                
  done clear
  C)
                  Sodium ions will acid radicals                
  done clear
  D)
                  \[{{\operatorname{Na}}^{+}}\] ions will interfere with the detection of \[C{{a}^{2+}},\operatorname{B}{{a}^{2+}},{{\operatorname{Sr}}^{2+}}\] ions                
  done clear
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