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|Published on: Oct 16|Categories: Chemistry JAMB| 0 comments A. Cl– B. NO3– C. SO32- D. SO42- Correct Answer: Option C – SO32- Users Also Read These:A urine sample of a patient, tested with…When few drops of concentrated trioxonitrate(V) acid…If chlorine is bubbled into water and the resulting…When chlorine is passed through a sample of water,…A few drops of concentrated HNO3 is added to an…SEE ALSO The bond formed between two elements with electron configurations 1s² 2s² 2p6 3s² and 1s² 2s² 2p4 is?