Computer · Environmental Engineering
पीने के पानी में फ्लोराइड की अधिकतम अनुमेय सांद्रता (mg/L या ppm में) कितनी है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 mg/लीटर
- 220.5 mg/लीटर
- 310 mg/लीटर
- 41.5 mg/लीटर✓
सही उत्तर देखें
1.5 mg/लीटर
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