BOOKS EACH OF 20 LEAVES.
| INDICATOR PAPERS | COLOUR CHANGE |
| BLUE LITMUS | BLUE – RED |
| RED LITMUS | RED – BLUE |
| CONGO ,RED | VIOLET – ORANGE |
| PHENOLPHTHALEIN | COLOURLESS – RED |
BOOKS EACH OF 20 LEAVES.
| INDICATOR PAPERS | COLOUR CHANGE |
| BLUE LITMUS | BLUE – RED |
| RED LITMUS | RED – BLUE |
| CONGO ,RED | VIOLET – ORANGE |
| PHENOLPHTHALEIN | COLOURLESS – RED |
