बिहार में मानसून सर्वप्रथम कृषि जलवायु क्षेत्र के किस जोन में आता है ? - In which zone of the agro-climatic zone does the monsoon come first in Bihar? - Bihar Me Monsoon Sarwapratham Krishi Jalwayu Shetra Ke Kis Zone Me Aata Hai ? Bihar Gk in hindi, Krishi Zone - II question answers in hindi pdf Zone - iii A questions in hindi, Know About Zone - I Bihar Gk online test Bihar Gk notes in hindi quiz book Zone - iii B