TS EAMCET 20-July-2022 Shift 1 Solved Paper

Unknown inorganic compound ' A ' is used for water softening. 'A' reacts with Na2CO3 to generate an alkaline compound ' B ' whose pH=14. ' A ' on reaction with CO2 gives cloudy ppt. ' B ' +CaO reacts with unknown organic compound ' C ' to give C6H6A,B and C, respectively, are