A, B, C and D are indicators that give the following changes in acids and bases. Identify them
| Indicator | Colour change in acid | Colour change in base |
| A | No change | Reddish-brown |
| B | Colourless | pink |
| C | Red | blue |
| D | Dark pink | green |
1
A - china rose, B - turmeric, C - blue litmus, D - phenolphthalein
2
A - turmeric, B - china rose, C - blue litmus, D - phenolphthalein
3
A - phenolphthalein, B - turmeric, C - red litmus, D - china rose
4
A - turmeric, B - phenolphthalein, C - red litmus, D - china rose