General Knowledge · Chemistry
फिनॉलोफ्थलीन, जो आमतौर पर इस्तेमाल किया जाने वाला अम्ल-क्षार सूचक है, किस pH परास पर रंगहीन से गुलाबी हो जाता है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18.2 – 10.0✓
- 24.5 – 6.5
- 36.0 – 7.0
- 42.0 – 4.0
सही उत्तर देखें
8.2 – 10.0
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