Solved papers for JEE Main & Advanced JEE Main Paper (Held on 7 May 2012)

done JEE Main Paper (Held on 7 May 2012) Total Questions - 1

• question_answer1) Reaction rate between two substance A and B is expressed as following:\[\text{rate}\,\text{=k }\!\![\!\!\text{ A}{{\text{ }\!\!]\!\!\text{ }}^{\text{n}}}{{\text{ }\!\![\!\!\text{ B }\!\!]\!\!\text{ }}^{\text{m}}}\] If the concentration of A is doubled and concentration of B is made half of initialcon centration, the ratio of the new rate to the earlier rate will be:     JEE Main Online Paper (Held On 07 May 2012)
  A)
  \[m+n\]                              
  done clear
  B)
                         \[n-m\]
  done clear
  C)
                         \[\frac{1}{{{2}^{\left(m+n \right)}}}\]                    
  done clear
  D)
                         \[{{2}^{\left( n-m \right)}}\]
  done clear
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