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प्रश्न
When phenolphthalein is added to NaOH, the colour of the solution will become _________.
- colourless
- red
- pink
- yellow
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उत्तर
pink
When phenolphthalein is added to NaOH, the colour of the solution will become pink
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संबंधित प्रश्न
Complete and balance the following chemical equation:
\[\ce{NaOH_{(aq)} + HCl_{(aq)} ->}\]
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(A) There is a layer of water over the layer of acetic acid.
(B) A precipitate is setting at the bottom of the test-tube.
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| Element | Acid | Base |
| A |
✗
|
✗ |
| B |
✓
|
✓ |
| C | ✓ | ✗ |
| D | ✓ | ✓ |
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______ change the colour of the indicators.
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\[\ce{ZCO3}\]
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