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Largest state by area – Rajasthan
Smallest state by area – Goa
Largest state by population – Uttar Pradesh
Smallest state by population – Sikkim
Largest Union Territory by area – Ladakh
Smallest Union Territory by area – Lakshadweep
Most populous Union Territory – Delhi
State with longest coastline – Gujarat
Newest Indian state – Telangana
State with highest population density – Bihar
Longest river in India – Ganga
Longest river wholly in India – Godavari
Largest river basin – Ganga Basin
Largest freshwater lake – Wular Lake
Largest saltwater lake – Chilika Lake
Longest dam – Hirakud Dam
Highest dam – Tehri Dam
Longest river bridge – Bhupen Hazarika Setu
Largest artificial lake – Govind Sagar
Largest brackish water lagoon – Chilika Lake
Highest mountain peak in India – Kangchenjunga
Highest peak in South India – Anamudi
Longest mountain range – Himalayas
Largest plateau – Deccan Plateau
Highest plateau – Ladakh Plateau
Highest waterfall – Kunchikal Falls
Longest glacier – Siachen Glacier
Highest motorable road – Umling La Pass
Largest volcanic region – Deccan Traps
Highest lake – Tso Moriri
Largest forest cover state – Madhya Pradesh
Largest mangrove forest – Sundarbans
Largest desert – Thar Desert
Largest wildlife sanctuary – Rann of Kutch
Largest national park – Hemis National Park
First national park – Jim Corbett National Park
Largest tiger reserve – Nagarjunsagar–Srisailam
Largest biosphere reserve – Gulf of Mannar
State with highest forest cover (%) – Mizoram
Largest wetland – Vembanad–Kol Wetland
Longest national highway – NH-44
Longest railway platform – Gorakhpur
Longest sea bridge – Atal Setu (MTHL)
Highest railway bridge – Chenab Bridge
Longest road tunnel – Atal Tunnel
Largest airport (area) – Indira Gandhi International Airport
Busiest airport – Delhi (IGI)
Largest port – Mumbai Port
Longest expressway – Purvanchal Expressway
First metro rail – Kolkata Metro
Largest city by population – Mumbai
Most populous metropolitan area – Delhi NCR
Largest planned city – Chandigarh
Highest capital city – Shimla
Largest slum area – Dharavi
Wettest city – Mawsynram
Cleanest city – Indore
Silicon Valley of India – Bengaluru
Financial capital – Mumbai
Cultural capital – Kolkata
Largest democracy – India
Largest written constitution – Indian Constitution
Largest employer – Indian Railways
Largest public sector bank – SBI
Largest stock exchange – BSE
Oldest stock exchange in Asia – BSE
Largest cooperative movement – Amul
Highest civilian award – Bharat Ratna
Largest parliamentary constituency – Ladakh
Largest state legislative assembly – Uttar Pradesh
Largest rice producer – West Bengal
Largest wheat producer – Uttar Pradesh
Largest sugarcane producer – Uttar Pradesh
Largest tea producer – Assam
Largest coffee producer – Karnataka
Largest cotton producer – Gujarat
Largest milk producer – Uttar Pradesh
Largest spice producer – Kerala
Largest iron ore producer – Odisha
Largest coal producer – Jharkhand
Oldest university – University of Calcutta
Largest university – IGNOU
Largest library – National Library, Kolkata
Longest river festival – Kumbh Mela
Largest fair – Pushkar Fair
Oldest language – Tamil
Largest film industry – Bollywood
First IIT – IIT Kharagpur
Largest stadium – Narendra Modi Stadium
Largest religious gathering – Kumbh Mela
First state to form linguistic basis – Andhra Pradesh
First state with GST – Assam
Highest literacy rate state – Kerala
Lowest literacy rate state – Bihar
Highest sex ratio state – Kerala
Largest tribal population state – Madhya Pradesh
First biosphere reserve – Nilgiri
Largest lake in Northeast – Loktak Lake
First solar-powered airport – Kochi
Largest inland port – Varanasi

Here are 100+ INDIA SUPERLATIVES in one-liner format