A rock sample was added to cold dilute HNO3. The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains? by Sunday | Oct 16 | Chemistry JAMB | 0 comments A. Cl– B. NO3– C. SO32- D. SO42- Correct Answer: Option C – SO32- Users Also Read These:A gas was evolved when a sample of gastric juice…A few drops of concentrated HNO3 is added to an…When chlorine is passed through a sample of water,…A colourless gas with a pungent smell is evolved…If acidified Potassium Dichromate(VI) (K2Cr2O7) acts…