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  3. When conc. H2SO4 was treated with K4[Fe(CN)6]CO gas was evolved. By mistake, somebody used dilute H2SO4 instead of Conc. H2SO4 then the gas evolved wa

. When conc. H2SO4 was treated with K4[Fe(CN)6]CO gas was evolved. By mistake, somebody used dilute H2SO4 instead of Conc. H2SO4 then the gas evolved wa

 
  • (A):CO
  • (B):HCN
  • (C):
  • (D):

Best Answer

Correct Answer:

(B): HCN

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