ChemistryMedium64×since 2004Q1745Sodium extract is heated with concentrated HNO₃ before testing for halogens because :ASilver halides are totally insoluble in nitric acid.BAg₂S and AgCN are soluble in acidic medium.CS₂^− and CN^−, if present, are decomposed by conc. HNO₃ and hence do not interfere in the test.DAg reacts faster with halides in acidic medium.Check answerSkip