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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
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| 3 | losing oxygen | ||
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