AllABCDEFGHIJKLMNOPQRSTUVWXYZ B Badruddin Tyabji First Muslim President of Indian National Congress.UPSC Pointers: President in 1887; symbol of Hindu–Muslim unity. Learn More → Baisakhi Definition: Harvest festival of Punjab.Prelims facts: Jallianwala Bagh massacre occurred on Baisakhi day (13 April... Learn More → Bali Definition: A religious or voluntary tax paid by subjects to the state or king; Ashoka... Learn More → Balisadhaka Special officers appointed by the King to collect compulsory taxes (formerly voluntary Bali) from peasants,... Learn More → Banawali A site located on the Saraswati river in Haryana. Prelims Pointer: While Kalibangan has the field,... Learn More → Bangabhasha Prakasika Sabha Early political organization formed in 1836 by associates of Raja Ram Mohan Roy.UPSC Pointers: Promoted... Learn More → Bank Rate Definition: The rate at which the RBI re-discounts bills of exchange and extends long-term credit... Learn More → Barchan Definition: Crescent-shaped sand dunes.Prelims Pointers: Formed under unidirectional winds.PYQ: UPSC Prelims 2013Current Affairs: Thar desert... Learn More → Bardoli Satyagraha Definition: No-tax agrarian movement.Year: 1928Prelims facts: Led by Vallabhbhai Patel. Learn More → Barren Island Definition: India’s only active volcano.Prelims Pointers: Andaman Sea; No tribes inhabiting.PYQ: UPSC Prelims 2021Current Affairs:... Learn More → Base Effect Definition: Base effect refers to the influence of last year’s price level on the current... Learn More → Basel III Norms Definition: International banking regulations designed to strengthen bank capital and liquidity buffers.Key Points for Prelims:•... Learn More → Batholiths Definition: Massive intrusive igneous rock body formed deep underground. Prelims Pointers: Mostly granite; Forms mountain cores. PYQ:... Learn More → Batta Definition: Extra allowance paid to soldiers during war.• Time Period: Company rule• UPSC Prelims Pointers:... Learn More → Battle of Bedara Definition: Battle between Mysore and British forces.• Time Period: 1759• UPSC Prelims Pointers: Haider Ali... Learn More → Battle of Buxar Definition: Decisive battle establishing British rule in Bengal.• Time Period: 1764• UPSC Prelims Pointers: Fought... Learn More → Battle of Plassey Definition: Battle establishing British dominance.• Time Period: 1757• UPSC Prelims Pointers: Robert Clive defeated Siraj-ud-Daulah. Learn More → Bauxite Definition: Chief ore of aluminium.Key Facts: Lateritic origin; India—Odisha, Jharkhand.PYQ Year: 2020. Learn More → Belagavi Session Definition: Indian National Congress session.Year: 1924Prelims facts: Presided over by Mahatma Gandhi; held at Belgaum. Learn More → Bengal Famine Severe famine caused by revenue pressure and administrative failures.UPSC Traps: Occurred in 1770; led to... Learn More → Benioff Zone Definition: A zone of inclined seismic activity corresponding to a subducting plate.UPSC Pointers: Depth up... Learn More → Bethune School Founded in 1849 for women’s education in Calcutta.UPSC Pointers: First girls’ school in India. Learn More → Bhaga Definition: The king’s share of agricultural produce, generally fixed at one-sixth of the total yield;... Learn More → Bhagat Singh Definition: Revolutionary socialist freedom fighter.Prelims facts: Associated with HSRA; executed in 1931. Learn More → Bhagirathi River Definition: Headstream of Ganga.Prelims Pointers: Origin—Gangotri Glacier.PYQ: UPSC Prelims 2016Current Affairs: Ganga rejuvenation. Learn More → Bharatmala Pariyojana Definition: A highway development programme focusing on economic corridors and border roads.Key Prelims Traps:Focus on... Learn More → BharatNet Definition: A flagship programme to provide broadband connectivity to all Gram Panchayats.Key Prelims Traps:Implemented by... Learn More → BHASKAR Definition: (Bharat Startup Knowledge Access Registry) - A centralized digital registry connecting startups, investors, mentors,... Learn More → Bhil Uprisings Definition: Tribal revolts by Bhils against British rule and local oppression.Time period: 1817–19, later phases... Learn More → Bhumisparsha Mudra Definition: A symbolic hand gesture depicting the Buddha touching the earth to bear witness to... Learn More → Bicameralism Definition: Legislature with two houses.Prelims facts: Introduced at the Centre by Government of India Act,... Learn More → Big Bang Theory Definition: Theory explaining origin of universe from a hot, dense state.• UPSC Pointers: Proposed by... Learn More → BioE3 Policy Definition: Biotechnology policy for economy, environment and employment.Key Pointers:• Emphasises biofoundries.• Linked to net-zero goals.•... Learn More → Biofortification Definition: Biofortification is the process of enhancing the nutritional content of crops during their growth... Learn More → Bipin Chandra Pal Definition: Nationalist leader and extremist thinker.Prelims facts: Member of Lal-Bal-Pal; advocated passive resistance. Learn More → Bird’s Foot Delta Definition: Delta with finger-like distributaries.Prelims Pointers: Example: Mississippi Delta.PYQ: UPSC Prelims 2013Current Affairs: Sediment starvation... Learn More → Black Hole Tragedy Definition: Incident involving imprisonment of British prisoners.• Time Period: 1756• UPSC Prelims Pointers: Occurred at... Learn More → Blizzards Definition: Severe snowstorm with strong winds and low visibility.Region: Polar & temperate regions.PYQ: 2021 Learn More → Blood Rain Definition: Rain colored red due to dust or algae.India Case: Kerala (2001).PYQ: 2018 Learn More → Blue Water Policy Definition: A Portuguese naval strategy emphasizing control of open seas rather than land territories.• Time... Learn More → Bodhisattva Definition: In Mahayana Buddhism, a being who postpones personal liberation (Nirvana) in order to help... Learn More → Borra Caves Definition: Limestone caves in Andhra Pradesh.Prelims Pointers: Eastern Ghats; Tribal folklore.PYQ: UPSC Prelims 2018Current Affairs:... Learn More → BOT Model Definition: Build-Operate-Transfer model where private entity builds and operates asset for concession period.Key Prelims Traps:Ownership... Learn More → Brahmavadini Definition: Learned women in the Vedic period who had access to education and composed hymns... Learn More → British East India Company Definition: A British trading company established in 1600 that gradually transformed into a territorial power... Learn More → Bronze Dancing Girl - A masterpiece of Harappan art found at Mohenjodaro. Prelims Pointer: It was made using the... Learn More →