 
       
      
     In the above chemical reaction, intermediate "X"and reagent/condition "A" are :
 In the above chemical reaction, intermediate "X"and reagent/condition "A" are :  
Option: 1 
Option: 2
Option: 3
Option: 4 
 
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 5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C.  If Na2SO4 is 81.5% ionised, the value of x (K

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