The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided…

The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided in list II. match List I with List II and select the correct answer using the code given below the lists :
 
  List I   List II
 A.  PbO2+H⁡2SO4⟶?PbSO4+O2+other product  P  NO
 B.  Na2S⁡2O3+H⁡2O⟶?NaHSO4+other product  Q  I2
 C.  N⁡2H⁡4⟶?N⁡2+other product  R  Warm
 D.  XeF⁡2⟶?Xe+other product  S Cl2
  1. a-p;b-r;c-q;d-s;
  2. a-p;b-r;c-q;d-s;
  3. a-r;b-s;c-q;d-p;
  4. a-r;b-q;c-s;d-p;

Solution

2PbO2 + 2H⁡2SO4⟶Warm2PbSO4 + O2 + 2H2O
Na2S⁡2O⁡3 + H⁡2O⁡⟶+Cl⁡2NaHSO4 + HCl
N⁡2H⁡4⟶+I⁡2N⁡2 + 4HI
XeF⁡2⟶+NOXe + NOF

Asked in: JEE Advanced 2013 (Paper 2)

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