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| Q. |
The apparatus used to test acidity of aqueous solution is - |
| A. | pH meter |
| B. | Ammeter |
| C. | Hygrometer |
| D. | Acidmeter |
| Answer» A. pH meter | |
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Explanation: A pH meter is an electronic device used for measuring the pH (acidity or alkalinity) of a liquid. A typical pH meter consists of a special measuring probe (a glass electrode) connected to an electronic meter that measures and displays the pH reading. |
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