बिहार में नमक सत्याग्रह का आरम्भ कब हुआ ? - When did the Salt Satyagraha start in Bihar? - Bihar Me Namak Satyagrah Ka Aarambh Kab Hua ? Bihar Gk in hindi, Bihar Modern History Quiz 18 April , 1930 question answers in hindi pdf 20 April , 1930 questions in hindi, Know About 15 April , 1930 Bihar Gk online test Bihar Gk notes in hindi quiz book 25 April , 1930