When concentrated sulphuric acid awas treated with potassium ferrocyan – InterviewSolution

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1.	When concentrated sulphuric acid awas treated with potassium ferrocyanide, CO gas was evolved. By mistake, somebody used dilute sulphuric acid instead of concentrated sulphuric acid, then the gas evolved was:
Answer» CO HCN `N_(2)` `CO_(2)` ANSWER :B

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