AllABCDEFGHIJKLMNOPQRSTUVWXYZ I Ilbert Bill Controversy 1883 controversy over allowing Indian judges to try European offenders.UPSC Pointers: Exposed racial arrogance of... Learn More → INA Trials Definition: Trial of Indian National Army officers.Year: 1945Prelims facts: Conducted at Red Fort; aroused massive... Learn More → Inam Commission Commission set up to investigate rent-free land grants.UPSC Traps: Associated with annexations under Dalhousie. Learn More → Inclusive Growth Definition: Growth strategy ensuring benefits reach all sections of society.Key Points for Prelims:• Theme of... Learn More → Incremental Capital Output Ratio Definition: Incremental Capital Output Ratio (ICOR) measures the additional capital required to produce an additional... Learn More → Indian Association of Calcutta Founded in 1876 by Surendranath Banerjea and Ananda Mohan Bose.UPSC Pointers: Forerunner of INC; aimed... Learn More → Indian National Army Definition: Armed force to liberate India.Prelims facts: Led by Subhas Chandra Bose; slogan 'Delhi Chalo'. Learn More → Indian Space Research Organisation Definition: ISRO is India’s national space agency, established in 1969.Key Contributions: PSLV, Gaganyaan, Chandrayaan missions.UPSC... Learn More → Indicative Planning Definition: A form of planning where the state sets broad targets and acts as a... Learn More → Inflation Premium Definition: Inflation premium is the extra return demanded by investors to compensate for the erosion... Learn More → Inflation Tax Definition: Inflation tax refers to the loss of purchasing power faced by people holding cash... Learn More → Input Tax Credit Definition: A GST provision allowing businesses to claim credit for tax paid on inputs used... Learn More → Inselberg Definition: Isolated residual hill in plains.Prelims Pointers: Common in arid regions.PYQ: UPSC Prelims 2015Current Affairs:... Learn More → Integrated Farming System Definition: Integrated Farming System (IFS) combines crop farming with allied activities like livestock, fisheries, and... Learn More → Interim Government Temporary government formed in 1946 before independence.Headed by Jawaharlal Nehru.Functioned under British framework.Included Indian leaders. Learn More → International Civil Aviation Organization A specialized UN agency established in 1944 that facilitates global cooperation in civil aviation. India was... Learn More → International Solar Alliance Definition: A treaty-based intergovernmental organization promoting solar energy. Prelims Traps: Headquarters in Gurugram. India and France... Learn More → Interstellar Mapping and Acceleration Probe Definition: NASA mission to study heliosphere boundary.Launch: 2025 (planned).UPSC Angle: Solar system–interstellar interaction. Learn More → Inverted Duty Structure Definition: A situation where tax rate on inputs is higher than tax rate on finished... Learn More → InvITs Definition: Infrastructure Investment Trusts are pooled investment vehicles for infrastructure assets.Key Prelims Traps:Regulated by SEBI.Used... Learn More → IRNSS Definition: Indian Regional Navigation Satellite System.UPSC Traps: Official name of NavIC.Current Affairs: Integration with smartphones. Learn More → Ishwar Chandra Vidyasagar (1820–1891) - A prominent Indian social reformer, educator, and intellectual of the Bengal Renaissance. Prelims Pointers: ... Learn More → Isostasy Definition: Equilibrium between Earth’s crust and mantle.Prelims Pointers: Explains mountain roots; Airy & Pratt models.PYQ:... Learn More → Isotherms Definition: Lines joining points of equal temperature on a map.UPSC Trap: Used in climatology, not... Learn More → ITCZ Definition: Inter-Tropical Convergence Zone where trade winds meet.Key Facts: Migrates seasonally, causes monsoon.PYQ: 2017, 2020 Learn More → Izaredari Revenue farming system where right to collect revenue was auctioned.UPSC Traps: Led to exploitation; later... Learn More →