Ol Chiki Script

• Ol Chiki is the indigenous script developed for the Santhali language, an Austroasiatic (Munda) tongue spoken by India's largest Scheduled Tribe by population.
• Created by Pandit Raghunath Murmu in 1925; consists of 30 letters designed to capture Santhali phonetics that borrowed scripts (Roman, Bengali, Odia, Devanagari) could not.
• UPSC relevance: tribal cultural identity, Eighth Schedule, 92nd Constitutional Amendment, and current-affairs hook of the 2025–26 centenary.