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 - 2

• question_answer1)                 Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of:         JEE Main Online Paper (Held On 09 April 2013)          
  A)
                  \[{{\operatorname{CrO}}_{3}}\]                
  done clear
  B)
                  \[\operatorname{Cr}{{\operatorname{CI}}_{3}}\]                
  done clear
  C)
                  \[\operatorname{Cr}{{\operatorname{O}}_{3}}{{\operatorname{CI}}_{2}}\]                
  done clear
  D)
                  \[{{\operatorname{Cr}}_{2}}{{\operatorname{O}}_{3}}\]
  done clear
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• question_answer2)                 The element which of the following outer electron configuration may exhibit the largest number of oxidation states in its compounds:              JEE Main Online Paper (Held On 09 April 2013)     
  A)
                  \[3{{\operatorname{d}}^{5}}4{{\operatorname{s}}^{2}}\]                
  done clear
  B)
                  \[3{{\operatorname{d}}^{8}}4{{\operatorname{s}}^{2}}\]                
  done clear
  C)
                  \[3{{\operatorname{d}}^{7}}4{{\operatorname{s}}^{2}}\]                          
  done clear
  D)
                  \[3{{\operatorname{d}}^{6}}4{{\operatorname{s}}^{2}}\]                
  done clear
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