The oxidation number is changed in which of the following case? – InterviewSolution

1.	The oxidation number is changed in which of the following case?
Answer» `SO_(2)` GAS is passed into `Cr_(2)O_(7)^(2-)//H^(+)` AQUEOUS solution of `CrO_(4)^(2-)` is ACIDIFIED `CrO_(2)Cl_(2)` is dissolved in `NAOH` `Cr_(2)O_(7)^(2-)` solution is made alkaline. Answer :A

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