General Knowledge · Environmental History
केंद्रीय भूमि जल बोर्ड (CGWB) ने किस वर्ष पूरे भारत में व्यवस्थित भूजल गुणवत्ता निगरानी के लिए अपना समर्पित राष्ट्रीय नेटवर्क स्थापित किया था?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11999
- 21988✓
- 31970
- 41960
सही उत्तर देखें
1988
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