राज्य में ऑपरेशन फ्लड-1 कब प्रारंभ हुआ ? - When did Operation Flood-1 start in the state? - Rajya Me Operation Flood - 1 Kab Prarambh Hua ? UP GK in hindi, मिट्टी कृषि एवं पशुपालन 1970 question answers in hindi pdf 1973 questions in hindi, Know About 1969 UP GK online test UP GK notes in hindi quiz book 1975