Medical Science · Diseases
नीले शिशु संलक्षण में, पेयजल में नाइट्रेट की कितनी सांद्रता शिशुओं के लिए खतरनाक मानी जाती है?
- 145 ppm या उससे अधिक
- 220 ppm या उससे अधिक
- 310 ppm या उससे अधिक✓
- 45 ppm या उससे अधिक
सही उत्तर देखें
10 ppm या उससे अधिक
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