सरैया और मांझी राज्य में शोरा उत्पादक क्षेत्र हैं ? ये स्थान किस जिले में स्थित है ? - Saraiya and Manjhi are saltpeter producing areas in the state? In which district is this place located? - saraiya Aur manjhi Rajya Me Shora Utpadak Shetra Hain ? Ye Sthan Kis Jile Me Sthit Hai ? Bihar Gk in hindi, Government Schemes Saran question answers in hindi pdf Vaishali questions in hindi, Know About Siwan Bihar Gk online test Bihar Gk notes in hindi quiz book GopalGanj