[[“Sr. No.”,”Experiment”,”Observation”,”Inference”],[“1″,”Salt solution + dil H2SO4 solution”,”No gas is evolved”,”Group A (CO32-, S2-,SO32-, NO2-, CH3COO- absent)”],[“2″,”Salt + Concn H2SO4 + Heat”,”No gas evolved”,”Group B anions (Cl-, Br-, I-, NO3-, C2O4-2, are absent)”],[“3″,”Salt solution + BaCl2 solution”,”White Ppt”,”Group C (SO42-) May be”],[“(b) Confirmative test :”,”#colspan#”,”#colspan#”,”#colspan#”],[“Sr. No.”,”Experiment”,”Observation”,”Inference”],[“1″,”BaCl2 test : Salt Solution + BaCl2 Solution Add dil. HCl or dil HNO3″,”White Ppt formed Ppt remains insoluble”,”SO42- confirmed”],[“2″,”Lead Acetate Test : – Salt Solution + lead acetate solution Add ammonium acetate Solution (CH3COO NH4 ) to above ppt.”,”White ppt. Formed Ppt becomes soluble”,”SO4 2- confirmed”]]