'A' and 'B' are compounds of sodium. 'A' is thermally stable. On passing CO_(2) through the solution of 'A', 'B' is formed. 'B' on heating gives 'A'. Phenolphthalein is added to the aqueous solution of 'A' and 'B'. The colours of solutions are

'A' and 'B' are compounds of sodium. 'A' is thermally stable. On passi

1.	'A' and 'B' are compounds of sodium. 'A' is thermally stable. On passing CO_(2) through the solution of 'A', 'B' is formed. 'B' on heating gives 'A'. Phenolphthalein is added to the aqueous solution of 'A' and 'B'. The colours of solutions are
Answer» Colouress, COLOURLESS PINK, Colourless Colourless, Pink Pink, pink ANSWER :B