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| Q. |
Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid? |
| A. | Methylene blue |
| B. | Methyl red |
| C. | Phenolphthaline |
| D. | Methyl orange |
| Answer» D. Methyl orange | |
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Explanation: Methyl orange is a pH indicator frequently used in titrations. It is often used in titrations because of its clear and distinct colour change. Because it changes colour at the pH of a mid-strength acid, it is usually used in titrations for acids. |
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