उत्तर प्रदेश जल प्रदूषण निवारण एवं नियंत्रण बोर्ड का गठन कब किया गया ? - When was the Uttar Pradesh Water Pollution Prevention and Control Board formed? - Uttar Pradesh Jal Pradooshann Niwaran Aivam Niyantran Board Ka Gathan Kab Kiya Gaya ? UP GK in hindi, विज्ञान एवं सूचना प्रौद्योगिकी 1974 question answers in hindi pdf 1975 questions in hindi, Know About 1972 UP GK online test UP GK notes in hindi quiz book 1976