बिहार के किस क्रांतिकारी नेता ने 14 अप्रैल, 1929 को प्रथम नौजवान दिवस मनाने का ऐलान किया ? - Which revolutionary leader of Bihar announced to celebrate the first youth day on April 14, 1929? - Bihar Ke Kis Krantikari Neta ne 14 April , 1929 Ko Pratham Naujawan Diwas Manane Ka Elan Kiya ? Bihar Gk in hindi, Bihar Modern History Quiz Mannindra Narayann question answers in hindi pdf Pro Gyan Sahaa questions in hindi, Know About Fanindranath Ghosh Bihar Gk online test Bihar Gk notes in hindi quiz book Inme Se Koi Nahi