Chemistry · Acids, Bases and Salts
किसी विलयन के सटीक pH को मापने के लिए आमतौर पर निम्नलिखित में से किसका उपयोग सूचक (indicator) के रूप में किया जाता है?
- 1फिनोलफ्थलीन (Phenolphthalein)
- 2सार्वत्रिक सूचक (Universal indicator)✓
- 3लिटमस (Litmus)
- 4इओसिन (Eosin)
सही उत्तर देखें
सार्वत्रिक सूचक (Universal indicator)
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