Solved papers for JEE Main & Advanced JEE Main Online Paper (Held On 23 April 2013)

done JEE Main Online Paper (Held On 23 April 2013) Total Questions - 2

• question_answer1)                 When a small amount of \[\operatorname{K}\operatorname{M}\operatorname{n}{{\operatorname{O}}_{4}}\]is added to concentrated\[{{\operatorname{H}}_{2}}\operatorname{S}{{\operatorname{O}}_{4}},\] a green oily compound is obtained which is highly explosive in nature. Compound may be:     JEE Main Online Paper ( Held On 23  April 2013 )
  A)
                   \[\operatorname{M}\operatorname{n}\operatorname{S}{{\operatorname{O}}_{4}}\]                               
  done clear
  B)
                                          \[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{7}}\]
  done clear
  C)
                                          \[\operatorname{M}\operatorname{n}{{\operatorname{O}}_{2}}\]                    
  done clear
  D)
                                          \[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{3}}\]
  done clear
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• question_answer2) ­­                Identify incorrect statement:     JEE Main Online Paper ( Held On 23  April 2013 )
  A)
                   \[C{{u}_{2}}O\] is colourless      
  done clear
  B)
                                          Cupper (I) compounds
  done clear
  C)
                                           Copper (I) compounds are diamagnetic
  done clear
  D)
                                          \[{{\operatorname{Cu}}_{2}}\operatorname{S}\] is black
  done clear
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