Chemistry-
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Moreover, the salt 'A' on heating with solid K2Cr2O7 and concentrated H2SO4 produces deep red vapours which dissolve in sodium hydroxide solution forming a yellow solution. This yellow solution gives yellow precipitate with Ba(NO3 ) 2 solution. On the basis of the aforesaid characteristic informations answer the following questions :
Select the correct statement.

  1. Aqueous solution of 'A' reacts with AgNO3 solution to give white precipitate which turns yellow on treatment with sodium arsenite.    
  2. Aqueous solution of 'A' produces white precipitate with sodium hydroxide which turns yellowish-white on boiling.    
  3. White turbidity 'E' is soluble in dilute mineral acids.    
  4. All of these    

The correct answer is: All of these

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