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 colourless gas with a pungent smell is evolved…When concentrated H2SO4 is added to NaCI(s), the gas…A gas was evolved when a sample of gastric juice…HNO3 does not usually react with metals to liberate…What is the organic product of the reaction of…