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:The salt that reacts with dilute hydrochloric acid…What is the organic product of the reaction of…The colour of phenolphthalein indicator in dilute HNO3 is?When concentrated H2SO4 is added to NaCI(s), the gas…A solution of a salt was acidified with HCI when a…