Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 May 2012)

done JEE Main Paper (Held On 19 May 2012) Total Questions - 1

• question_answer1) The standard potentials of\[A{{g}^{+}}/Ag,H{{g}_{2}}^{2+}/2Hg,\]\[C{{u}^{2+}}/Cu\] and \[M{{g}^{2+}}/Mg\] electrodes are 0.80,0.79, 0.34 and -2.37 V, respectively. An aqueous solution which contains one mole per litre of the salts of each of the four metals is electrolyzed. With increasing voltage, the correct sequence of deposition of the metals at the cathode is   JEE Main  Online Paper (Held On 19  May  2012)
  A)
  \[Ag,Hg,Cu,Mg\]             
  done clear
  B)
                         \[Cu,Hg,Ag\]only
  done clear
  C)
                         \[Ag,Hg,Cu\]only            
  done clear
  D)
                         \[Mg,Cu,Hg,Ag\]
  done clear
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