Teaching Odisha LTR Teacher Mock Test Series 2024-25 General Knowledge Ecology and Environment Conservation efforts: India and World

खालीलपैकी कोणत्या वर्षी जल (प्रदूषण प्रतिबंध व नियंत्रण) कायदा कधी लागू करण्यात आला?

1
1976
2
1977
3
1974
4
1975
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