| Answer | Crossword Clue |
|---|---|
| SORROW | It turns people blue |
| ALKALI | It turns litmus blue |
| BASE | It turns litmus blue |
| MOLD | It turns bread blue |
| BASE | It turns litmus paper blue |
| ALKALI | It turns litmus paper blue |
| LITMUS | It turns blue in acid |
| ALKALI | It turns red litmus paper blue |
| LITMUS | It turns blue in an alkali |
