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प्रश्न
Prepare red cabbage juice by boiling a piece of red cabbage in water. Use it as an indicator and test the acidic and basic solutions with it. Present your observations in the form of a table.
उत्तर
Red Cabbage Juice as an Indicator:
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Prepare the Indicator:
- Boil a piece of red cabbage in water until the water turns dark purple. This cabbage juice will act as a pH indicator.
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Testing Solutions:
- Collect various acidic and basic solutions for testing (e.g., lemon juice, vinegar, baking soda solution, soap water).
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Observations:
| Solution | Colour Change with Red Cabbage Juice | Nature |
| Lemon Juice | Pink/Red | Acidic |
| Vinegar | Pink/Red | Acidic |
| Baking Soda Solution | Green/Blue | Basic |
| Soap Water | Green/Blue | Basic |
| Distilled Water | Purple (No change) | Neutral |
Explanation:
- Acidic solutions turn the red cabbage juice pink/red.
- Basic solutions turn the red cabbage juice green/blue.
- Neutral solutions show no significant colour change, remaining purple.
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