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Match the significant products of electrolysis of species in column I with those in column II. `{:("Column-I","Column-II"),((A)Aq.CuSO_4("dilute"),"Using Pt electrodes",(p)O_2 "gas is evolved at anode"),((B)Aq.CuSO_4("dilute"),"Using Cu electrodes",(q)"Gas other than"O_2 "is (also) evolved at anode"),(( C)Aq.MgCl_2,"Using Pt electrodes",(r)"pH of solution changes due to electrolysis"),((D)"Molten" MgCl_2,"Using C electrodes",(s)"Metal is deposited at the cathode"),(,(t)Cl_2 "gas is evolved at anode") :}` |
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Answer» Correct Answer - A-p,r,s ; B-s ; C-p,q,r,t ; D-q,s,t (A)`2Cu^(2+)+2H_2Oto2Cu+O_2+4H^(+)` (B)`Cu(a)+Cu^(2+)toCu^(2+)+Cu(c )` (C )`MgCl_2+2H_2OtoMg(OH)_2+H_2+Cl_2` partly `O_2` will always be liberated due to oxidation of water. (D)`MgCl_2 to Mg+Cl_2` |
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