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100-678: Rajiv Gandhi Government General Hospital is a major state-owned hospital situated in Chennai , India . The hospital is funded and managed by the state government of Tamil Nadu . Founded in 1664 by the British East India Company , it is the first modern hospital in India. In the 19th century, the Madras Medical College joined it. As of 2018, the hospital receives an average of 12,000 outpatients every day. The Government General Hospital

200-651: A tsunami lashed the shores of Chennai, killing 206 people in Chennai and permanently altering the coastline. The 2015 Chennai Floods submerged major portions of the city, killing 269 people and resulting in damages of ₹ 86.4 billion (US$ 1 billion). Chennai is located on the southeastern coast of India in the northeastern part of Tamil Nadu on a flat coastal plain known as the Eastern Coastal Plains with an average elevation of 6.7 m (22 ft) and highest point at 60 m (200 ft). Chennai's soil

300-405: A 1,000 KVA generator with automatic main failure panel. An air-conditioning plant caters to the needs of operation theatres, ICUs, IMCUs, blood bank and special wards. A digital EPABX system has been installed with battery power backup. The hospital has 52 operation theatres, besides intensive care units and post-operative wards. The hospital requires around 1,400 cubic metres of oxygen a day, which

400-452: A banana leaf. Eating on a banana leaf is an old custom and imparts a unique flavour to the food and is considered healthy. Idly and dosa are popular breakfast dishes. Chennai has an active street food culture and various cuisine options for dining including North Indian , Chinese and continental . The influx of industries in the early 21st century also bought distinct cuisines from other countries such as Japanese and Korean to

500-578: A beta-level city in the Global Cities Index , Chennai regularly features among the best cities to live in India and is amongst the safest cities in India. Chennai is a major centre for medical tourism and is termed "India's health capital". Chennai houses a major portion of India's automobile industry, hence the name " Detroit of India". It was the only South Asian city to be ranked among National Geographic 's "Top 10 food cities" in 2015 and ranked ninth on Lonely Planet 's best cosmopolitan cities in

600-612: A classical dance form that originated in Tamil Nadu and is the oldest dance in India. Cultural centres in the city include Kalakshetra and Government Music College. Chennai is also home to some choirs, who during the Christmas season stage various carol performances across the city in Tamil and English. Chennai is home to many museums, galleries, and other institutions that engage in arts research and are major tourist attractions. Established in

700-475: A combination of various folk music, is sung mainly in the working-class area of North Chennai. Chennai Sangamam , an art festival showcasing various arts of South India is held every year. Chennai has been featured in UNESCO Creative Cities Network list since October 2017 for its old musical tradition. Chennai has a diverse theatre scene and is a prominent centre for  Bharata Natyam ,

800-533: A cost of ₹ 553.3 million, were completed in February 2017, March 2017, and June 2018, respectively. The entire hospital block has been remodelled with the reconstruction of the massive twin towers. These replace the original hospital buildings, which were more than a century old. While the hospital is managed by the medical superintendent, the dean is the head of the Madras Medical College (MMC) attached to

900-509: A dry-summer tropical wet and dry climate which is designated As under the Köppen climate classification . The city lies on the thermal equator and as it is also located on the coast, there is no extreme variation in seasonal temperature. The hottest time of the year is from April to June with an average temperature of 35–40 °C (95–104 °F). The highest recorded temperature was 45 °C (113 °F) on 31 May 2003. The coldest time of

1000-470: A genetic lab at the hospital to help in the early diagnosis of such diseases. In June 2012, the first skywalk in Chennai connecting Chennai Central Railway Station , Park Railway Station and the hospital was planned at a cost of ₹ 200 million. It will be 1 km long, linking the hospital with nine points, including Chennai Central Railway Station, Evening Bazaar, Government Medical College and Ripon Buildings on Poonamallee High Road . In April 2022,

1100-532: A house. There are about 1,131 slums in the city housing more than 300,000 households. The city is governed by the Greater Chennai Corporation (formerly "Corporation of Madras"), which was established on 29 September 1688. It is the oldest surviving municipal corporation in India and the second oldest surviving corporation in the world. In 2011, the jurisdiction of the Chennai Corporation

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1200-416: Is cryogenic with a freezing point of 54.36 K (−218.79 °C; −361.82 °F) and a boiling point of 90.19 K (−182.96 °C; −297.33 °F) at 1 bar (15 psi). Liquid oxygen has an expansion ratio of 1:861 and because of this, it is used in some commercial and military aircraft as a transportable source of breathing oxygen. Because of its cryogenic nature, liquid oxygen can cause

1300-976: Is a division of the Tamil Nadu Police , the administrative control of which lies with the Home ministry of the Government of Tamil Nadu. Greater Chennai Traffic Police (GCTP) is responsible for the traffic management in the city. The metropolitan suburbs are policed by the Chennai Metropolitan Police , headed by the Chennai Police Commissionerate , and the outer district areas of the CMDA are policed by respective police departments of Tiruvallur, Kanchipuram, Chengalpattu and Ranipet districts. As of 2021 , Greater Chennai had 135 police stations across four zones with 20,000 police personnel. As of 2021 ,

1400-540: Is a major centre for music, art and dance in India. The city is called the Cultural Capital of South India. Madras Music Season , initiated by Madras Music Academy in 1927, is celebrated every year during the month of December and features performances of traditional Carnatic music by artists from the city. Madras University introduced a course of music, as part of the Bachelor of Arts curriculum in 1930. Gaana ,

1500-446: Is about 120 cm (47 in). The highest annual rainfall recorded was 257 cm (101 in) in 2005. Prevailing winds in Chennai are usually southwesterly between April and October and northeasterly during the rest of the year. The city relies on the annual monsoon rains to replenish water reservoirs. Cyclones and depressions are common features during the season. Water inundation and flooding happen in low-lying areas during

1600-616: Is among the largest small-scale industrial estates in the country. Chennai contributes more than 50 per cent of India's leather exports. Chennai is a major electronics hardware exporter. The city is home to the Madras Stock Exchange , India's third-largest by trading volume behind the Bombay Stock Exchange and the National Stock Exchange of India . Madras Bank, the first European-style banking system in India,

1700-461: Is among the major information technology (IT) hubs of India. Tidel Park established in 2000 was amongst the first and largest IT parks in Asia. The presence of SEZs and government policies have contributed to the growth of the sector which has attracted foreign investments and job seekers from other parts of the country. In the 2020s, the city has become a major provider of SaaS and has been dubbed

1800-527: Is amongst the top export districts in the country with more than US$ 2563 billion in exports. The city has a permanent exhibition complex Chennai Trade Centre at Nandambakkam . The city hosts the Tamil Nadu Global Investors Meet , a business summit organized by the Government of Tamil Nadu. With about 62% of the population classified as affluent with less than 1% asset-poor, Chennai has the fifth highest number of millionaires. Chennai

1900-560: Is characterized by a mix of regional and national political parties. During the 1920s and 1930s, the Self-Respect Movement , spearheaded by Theagaroya Chetty and E. V. Ramaswamy emerged in Madras. Congress dominated the political scene post Independence in the 1950s and 1960s under C. Rajagopalachari and later K. Kamaraj . The Anti-Hindi agitations led to the rise of Dravidian parties with Dravida Munnetra Kazhagam (DMK) forming

2000-432: Is classified as an industrial gas and is widely used for industrial and medical purposes. Liquid oxygen is obtained from the oxygen found naturally in air by fractional distillation in a cryogenic air separation plant . Air forces have long recognized the strategic importance of liquid oxygen, both as an oxidizer and as a supply of gaseous oxygen for breathing in hospitals and high-altitude aircraft flights. In 1985,

2100-505: Is designed to be quake-resistant. A framed structure with pile foundation is used in the superstructures. The tower blocks are constructed with structural glazing, aluminium composite panel cladding and Novakote finish. The total plinth area of Tower Block I is 31,559 square metres and Tower Block II is 33,304 square metres. The ground level is raised up to 1.40 metres (4'7") to avoid water stagnation and to allow gravity flow of rainwater. Each tower block has three staircases and eight lifts and

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2200-436: Is estimated to be around 64.06 km (24.73 sq mi) with 121 recorded species belonging to 94 genera and 42 families. Major species include Copper pod , Indian beech , Gulmohar , Raintree , Neem , and Tropical Almond . The city's marine and inland water bodies house a number of fresh water and salt water fishes, and marine organisms. Chennai had many lakes spread across the city, but urbanization has led to

2300-573: Is located on the Coromandel Coast of the Bay of Bengal . According to the 2011 Indian census , Chennai is the sixth-most populous city in India and forms the fourth-most populous urban agglomeration . Incorporated in 1688, the Greater Chennai Corporation is the oldest municipal corporation in India and the second oldest in the world after London . Historically, the region was part of

2400-654: Is mostly clay , shale and sandstone . Clay underlies most of the city with sandy areas found along the river banks and coasts where rainwater runoff percolates quickly through the soil. Certain areas in South Chennai have a hard rock surface. As of 2018, the city had a green cover of 14.9 per cent, with a per capita green cover of 8.5 square metres against the World Health Organization recommendation of nine square metres. As of 2017 , water bodies cover an estimated 3.2 km (1.2 sq mi) area of

2500-488: Is situated in Seismic Zone III , indicating a moderate risk of damage from earthquakes . Owing to the tectonic zone the city falls in, the city is considered a potential geothermal energy site. The crust has old granite rocks dating back nearly a billion years indicating volcanic activities in the past with expected temperatures of 200–300 °C (392–572 °F) at 4–5 km (2.5–3.1 mi) depth. Chennai has

2600-688: Is spread across five constituencies. It elects 28 MLAs to the state legislature. Being the capital of the Madras Province that covered a large area of the Deccan region, Chennai remained the centre of politics during the British colonial era. Chennai is the birthplace of the idea of the Indian National Congress , which was founded by the members of the Theosophical Society movement based on

2700-427: Is supplied through 1,052 outlets using cylinders. The hospital consumes around 300 oxygen cylinders every day. The hospital was the first government-run institution in the state to install a tank to store liquid oxygen . The tank, with a capacity to hold 13,000 litres of oxygen, would cater to the needs of the entire hospital when it becomes operational. The tank has been installed in the space between Tower Block 2 and

2800-540: Is the base for Tamil cinema , nicknamed Kollywood, alluding to the neighbourhood of Kodambakkam where several film studios are located. The history of cinema in South India started in 1897 when a European exhibitor first screened a selection of silent short films at the Victoria Public Hall in the city. Swamikannu Vincent purchased a film projector and erected tents for screening films which became popular in

2900-506: Is the first in the government sector to have a full-fledged emergency department, which includes triage area, resuscitation bay and colour-coded zones, per the Tamil Nadu Accident and Emergency Care Initiative (TAEI) guidelines. In 2015–2016, construction of four multi-storied blocks began at a cost of ₹ 1,244.8 million. Of these, three buildings, namely, rheumatology block, nephrology block, and urology and hepatology blocks, built at

3000-591: The AVANI , headquartered in Chennai manufactures Armoured fighting vehicles , Main battle tanks , tank engines and armoured clothing for the use of the Indian Armed Forces . ISRO , the premier Indian space agency primarily responsible for performing tasks related to space exploration operates research facilities in the city. Chennai is the third-most visited city in India by international tourists according to Euromonitor. Medical tourism forms an important part of

3100-654: The Chennai Central and Chennai Egmore railway stations. The Santhome Church , which was originally built by the Portuguese in 1523 and is believed to house the remains of the apostle St. Thomas , was rebuilt in 1893, in neo-Gothic style. By the early 20th century, the art deco made its entry upon the city's urban landscape with buildings in George Town including the United India building (presently housing LIC ) and

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3200-467: The Chennai Metropolitan Area , the 35th-largest urban area in the world by population and one of the largest metropolitan economies of India. Chennai has the fifth-largest urban economy and the third-largest expatriate population in India. As a gateway to South India, Chennai is among the most-visited Indian cities ranking 36th among the most-visited cities in the world in 2019. Ranked as

3300-663: The Chepauk Palace designed by Paul Benfield amongst the first Indo-Saracenic buildings in India. Other buildings in the city from the era designed in this style of architecture include Fort St. George (1640), Amir Mahal (1798), Government Museum (1854), Senate House of the University of Madras (1879), Victoria Public Hall (1886), Madras High Court (1892), Bharat Insurance Building (1897), Ripon Building (1913), College of Engineering (1920) and Southern Railway headquarters (1921). Gothic revival-style buildings include

3400-497: The Chola , Pandya , Pallava and Vijayanagara kingdoms during various eras. The coastal land which then contained the fishing village Madrasapattinam, was purchased by the British East India Company from the Nayak ruler Chennapa Nayaka in the 17th century. The British garrison established the Madras city and port and built Fort St. George , the first British fortress in India. The city

3500-543: The Globalization and World Cities Research Network , Chennai is amongst the most integrated with the global economy, classified as a beta-city . As of 2023 , Chennai metropolitan area had an estimated GDP of $ 143.9 billion, ranking it among the most productive metro areas in India. Chennai has a diversified industrial base anchored by different sectors including automobiles , software services , hardware , healthcare and financial services . As of 2021 , Chennai

3600-557: The Government of Tamil Nadu officially changed the name from Madras to Chennai. The name "Madras" continues to be used occasionally for the city as well as for places or things named after the city in the past. Stone Age implements have been found near Pallavaram in Chennai and according to the Archaeological Survey of India (ASI), Pallavaram was a megalithic cultural establishment, and pre-historic communities resided in

3700-622: The Hindu temples consisted of large mantapas with gate-pyramids called gopurams in quadrangular enclosures that surround the temple. The Gopuram, a monumental tower usually ornate at the entrance of the temple forms a prominent feature of Koils and whose origins can be traced back to the Pallavas who built the group of monuments in Mamallapuram . The associated Agraharam architecture, which consists of traditional row houses can still be seen in

3800-600: The Madras Presidency with Madras as the capital. The city became a major naval base and became the central administrative centre for the British in South India. The city was the baseline for the Great Trigonometrical Survey of India , which was started on 10 April 1802. With the advent of railways in India in the 19th century, the city was connected to other major cities such as Bombay and Calcutta , promoting increased communication and trade with

3900-582: The Treaty of Aix-la-Chapelle and strengthened the town's fortress wall to withstand further attacks from the French and Hyder Ali , the king of Mysore . They resisted a French siege attempt in 1759. In 1769, the city was threatened by Hyder Ali during the First Anglo-Mysore War with the Treaty of Madras ending the conflict. By the 18th century, the British had conquered most of the region and established

4000-432: The hinterland . After India gained its independence in 1947, the city became the capital of Madras State , the predecessor of the current state of Tamil Nadu. The city was the location of the hunger strike and death of Potti Sreeramulu which resulted in the formation of Andhra State in 1953 and eventually the re-organization of Indian states based on linguistic boundaries in 1956. In 1965, agitations against

4100-427: The imposition of Hindi and in support of continuing English as a medium of communication arose which marked a major shift in the political dynamics of the city and eventually led to English being retained as an official language of India alongside Hindi. On 17 July 1996, the city was officially renamed from Madras to Chennai, in line with then a nationwide trend to using less Anglicised names. On 26 December 2004,

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4200-549: The south zonal office of the Reserve Bank of India , the country's central bank, along with its zonal training centre and staff College, one of the two colleges run by the bank. The city also houses a permanent back office of the World Bank . About 400 financial industry businesses are headquartered in the city. DRDO , India's premier defence research agency operates various facilities in Chennai. Heavy Vehicles Factory of

4300-478: The weather radar at the Chennai Port prohibited the construction of buildings taller than 60 m around a radius of 10 km till 2009. This resulted in the central business district expanding horizontally, unlike other metropolitan cities, while the peripheral regions began experiencing vertical growth with the construction of taller buildings with the tallest building at 161 metres (528 ft). Chennai

4400-467: The "SaaS Capital of India". The automotive industry in Chennai accounts for more than 35% of India's overall automotive components and automobile output, earning the nickname " Detroit of India ". A large number of automotive companies have their manufacturing bases in the city. Integral Coach Factory in Chennai manufactures railway coaches and other rolling stock for Indian Railways . Ambattur Industrial Estate housing various manufacturing units

4500-511: The 15th century CE. The Portuguese arrived in 1522 and built a port named São Tomé after the Christian apostle, St. Thomas , who is believed to have preached in the area between 52 and 70 CE. In 1612, the Dutch established themselves near Pulicat , north of Chennai. On 20 August 1639, Francis Day of the British East India Company along with the Nayak of Kalahasti Chennappa Nayaka met with

4600-500: The Adyar, Cooum and Kosathaliyar rivers, and the Buckingham canal are heavily polluted with effluents and waste from domestic and commercial sources. The encroachment of urban development on wetlands has hampered the sustainability of water bodies and was a major contributor to the floods in 2015 and 2023 and water scarcity crisis in 2019 . The Chennai River Restoration Trust set up by

4700-637: The Buckingham Canal at Basin Bridge . The groundwater table in Chennai is at 4–5 m (13–16 ft) below ground level on average and is replenished mainly by rainwater. Of the 24.87 km (15.45 mi) coastline of the city, 3.08 km (1.91 mi) experiences erosion, with sand accretion along the shoreline at the Marina beach and the area between the Ennore Port and Kosasthalaiyar river . Chennai

4800-674: The Burma Shell building (presently the Chennai House), both built in the 1930s, and the Dare House built in 1940 examples of this architecture. After Independence , the city witnessed a rise in the Modernism and the completion of the LIC Building in 1959, the tallest building in the country at that time marked the transition from lime-and-brick construction to concrete columns. The presence of

4900-465: The East India Company's Garden House stood in the 1680s on the lower slopes of Nari Medu (literally "Hog's Hill") (the area around present-day Chennai Central ). New building at this site was constructed by John Sullivan at a cost of 42,000 pagodas and the hospital at the present-day site was formally opened on 5 October 1772. Between 1664 and 1772, the hospital had been moved nine times. By 1772,

5000-546: The General Hospital. In 1842, the H-shaped main building was constructed, and the hospital was opened to Indians. Simultaneously, the medical school was upgraded to Madras Medical College and started functioning from 1850. Between 1928 and 1938, the hospital was expanded to a great extent owing to the growing number of patients. A. L. Mudaliar was appointed as the first Indian principal of Madras Medical College. Since 1935, with

5100-550: The Tamil originally spoken by the native people of the city. Korean , Japanese , French , Mandarin Chinese , German and Spanish are spoken by foreign expatriates residing in the city. Chennai is home to a diverse population of ethno-religious communities. As per census of 2011, Chennai's population was majority Hindu (80.73%) with 9.45% Muslim , 7.72% Christian , 1.27% others and 0.83% with no religion or not indicating any religious preference. Tamils form majority of

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5200-470: The USAF started a program of building its own oxygen-generation facilities at all major consumption bases. Liquid oxygen is the most common cryogenic liquid oxidizer propellant for spacecraft rocket applications, usually in combination with liquid hydrogen , kerosene or methane . Liquid oxygen was used in the first liquid fueled rocket . The World War II V-2 missile also used liquid oxygen under

5300-534: The Vijayanager Emperor Peda Venkata Raya at Chandragiri and obtained a grant for land on the Coromandel coast on which the company could build a factory and warehouse for their trading activities. On 22 August, he secured the grant for a strip of land about 9.7 km (6 mi) long and 1.6 km (1 mi) inland in return for a yearly sum of five hundred lakh pagodas . The region

5400-561: The areas surrounding the temples. Chennai has the second highest number of heritage buildings in the country. With the Mugals influence in mediaeval times and the British later, the city saw a rise in a blend of Hindu , Islamic and Gothic revival styles, resulting in the distinct Indo-Saracenic architecture. The architecture for several institutions followed the Indo-Saracenic style with

5500-586: The building has a ramp with access to all floors. A separate fire-escape staircase and garbage disposal lift are found at the rear side of the building. Construction of an eight-storey block to house 23 outpatient departments began in August 2016 at a cost of ₹ 1014.5 million. It will add to the hospital an additional 432,000 square feet when it is opened in July 2019. The new block will have four bed-cum-passenger elevators and four passenger elevators. The building has

5600-476: The city houses the state executive and legislative headquarters primarily in the secretariat buildings in Fort St George. Madras High Court is the highest judicial authority in the state, whose jurisdiction extends across Tamil Nadu and Puducherry . The Greater Chennai Police (GCP) is the primary law enforcement agency in the city and is headed by a commissioner of police . The Greater Chennai Police

5700-538: The city through 27 water distribution stations. The city receives 530 million litres per day (mld) of water from Krishna River through Telugu Ganga project and 180 mld of water from the Veeranam lake project. 100 million litres of treated water per day is produced from the Minjur desalination plant, the country's largest seawater desalination plant. Chennai is predicted to face a deficit of 713 mld of water by 2026 as

5800-492: The city to 426 km (164 sq mi), the Chennai Municipal Corporation was renamed as Greater Chennai Corporation and the population including the new city limits as per the 2011 census was 6,748,026. As of 2019 , 40 per cent of the 1.788 million families in the city live below the poverty line . As of 2017 , the city had 2.2 million households, with 40 per cent of the residents not owning

5900-488: The city's economy with more than 40% of total medical tourists visiting India making it to Chennai. The city's water supply and sewage treatment are managed by the Chennai MetroWater Supply and Sewage Board . Water is drawn from Red Hills Lake and Chembarambakkam Lake , the major water reservoirs in the city and treated at water treatment plants located at Kilpauk , Puzhal , Chembarambakkam and supplied to

6000-439: The city. Chennai was the only South Asian city to be ranked among National Geographic 's "Top 10 food cities" in 2015. The economy of Chennai consistently exceeded national average growth rates due to reform-oriented economic policies in the 1970s. With the presence of two major ports, an international airport, and a converging road and rail networks, Chennai is often referred to as the "Gateway of South India". According to

6100-471: The city. Two major rivers flow through Chennai, the Cooum River (or Koovam ) through the centre and the Adyar River to the south. A section of the Buckingham Canal built in 1877-78, runs parallel to the Bay of Bengal coast, linking the two rivers. Kosasthalaiyar River traverses through the northern fringes of the city before draining into the Bay of Bengal, at Ennore Creek . The Otteri Nullah , an east–west stream, runs through north Chennai and meets

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6200-445: The country. With the history of Chennai dating back centuries, the architecture of Chennai ranges in a wide chronology. The oldest buildings in the city date from the 6th to 8th centuries CE, which include the Kapaleeshwarar Temple in Mylapore and the Parthasarathy Temple in Triplicane , built in the Dravidian architecture encompassing various styles developed during the reigns of different empires. In Dravidian architecture ,

6300-417: The creations of various departments, new buildings were constructed and the Public Works Department started maintaining the hospital. By the end of the 20th century, the government decided to demolish the old building and replace it with two tower blocks at a cost of ₹ 1,050 million. On 10 July 1987, the first ever transplant surgery in the hospital was done. The first successful cadaver renal transplantation

6400-411: The crime rate in the city was 101.2 per hundred thousand people. In 2009, Madras Central Prison , the major prison and one of the oldest in India was demolished with the prisoners moved to the newly constructed Puzhal Central Prison . While the major part of the city falls under three parliamentary constituencies ( Chennai North , Chennai Central and Chennai South ), the Chennai metropolitan area

6500-426: The demand is projected at 2,248 mld and supply estimated at 1,535 mld. The city's sewer system was designed in 1910, with some modifications in 1958. Liquid oxygen Liquid oxygen has a clear cyan color and is strongly paramagnetic : it can be suspended between the poles of a powerful horseshoe magnet . Liquid oxygen has a density of 1.141 kg/L (1.141 g/ml), slightly denser than liquid water, and

6600-444: The early 18th century, the Government Museum and the National Art Gallery are amongst the oldest in the country. The museum inside the premises of Fort St. George maintains a collection of objects of the British era. The museum is managed by the Archaeological Survey of India and has in its possession, the first Flag of India hoisted at Fort St George after the declaration of India's Independence on 15 August 1947 . Chennai

6700-517: The early 20th century. Keechaka Vadham , the first film in South India was produced in the city and released in 1917. Gemini and Vijaya Vauhini studios were established in the 1940s, amongst the largest and earliest in the country. Chennai hosts many major film studios, including AVM Productions , the oldest surviving studio in India. Chennai cuisine is predominantly South Indian with rice as its base. Most local restaurants still retain their rural flavour, with many restaurants serving food over

6800-553: The first government under C. N. Annadurai in 1967. In 1972, a split in the DMK resulted in the formation of the All India Anna Dravida Munnetra Kazhagam (AIADMK) led by M. G. Ramachandran . The two Dravidian parties continue to dominate electoral politics, the national parties usually aligning as junior partners to the two major Dravidian parties. Many film personalities became politicians and later chief ministers, including C. N. Annadurai, M. Karunanidhi , M. G. Ramachandran, Janaki Ramachandran and Jayalalithaa . Tamil  is

6900-436: The government announced the construction of a new building at a cost of ₹ 650 million to replace the century-old Bradfield Surgical Block, which was destroyed by fire in the same month. Chennai Chennai ( / ˈ tʃ ɛ n aɪ / ; Tamil: [ˈt͡ɕenːaɪ̯] , ISO : Ceṉṉai ), formerly known as Madras , is the capital and largest city of Tamil Nadu , the southernmost state of India . It

7000-402: The government of Tamil Nadu is working on the restoration of the Adyar River. The Environmentalist Foundation of India is a volunteering group working towards wildlife conservation and habitat restoration. A resident of Chennai is called a Chennaite . According to 2011 census , the city had a population of 4,646,732, within an area of 174 km (67 sq mi). Post expansion of

7100-435: The highest in any government hospital in the country, of which about 90 were cadaver transplants. As of 2013, the hospital has a 22 percent share in organ transplants, the highest among hospitals in the city. A corporation canteen is under construction on a 5,000 sq ft land and will be the biggest of its kind in the city. It can accommodate the 12,000 outpatients, 3,000 inpatients and thousands of staff and visitors at

7200-404: The hospital including for poly trauma, orthopaedics, medical emergencies, poison, surgical, cardiology, neurology and geriatrics. An additional 15 beds for cancer ICU has been planned along with the commissioning of a linear accelerator for precise radiation therapy. In 2018, an integrated laboratory facility in the hospital was officially sanctioned to provide "seamless lab services". The hospital

7300-462: The hospital was training Europeans, Eurasians and natives in Western methods of diagnosis and treatment and methods of preparing medicines. These trained personnel were posted to various dispensaries in the district headquarters of the then Madras Presidency to assist the qualified doctors. Subsequently, the hospital was turned into Garrison Hospital in 1814. By 1820, the institution had the recognition as

7400-416: The hospital. By 2006, the hospital started treating about 8,000 to 10,000 outpatients every day. The hospital also performed three open-heart surgeries free of cost daily. By 2013, the number of outpatients per day increased to 10,000 to 12,000. The hospital contributes to the second largest number of deceased organ donations in Tamil Nadu. In March 2012, the hospital performed its 1,000th kidney transplant,

7500-417: The hospital. The canteen is expected to open by mid-September 2013. The canteen will have ramps for differently-abled and possibly have separate counters for them. On 27 April 2022, a major fire broke out at the hospital at around 11 a.m. The Bradfield Surgical Block, one of the old buildings at the hospital premises, was affected in the fire. In March 2011, the state health department announced setting up of

7600-708: The idea conceived in a private meeting after a Theosophical convention held in the city in December 1884. The city has hosted yearly conferences of the Congress seven times, playing a major part in the Indian independence movement . Chennai is also the birthplace of regional political parties such as the South Indian Welfare Association in 1916 which later became the Justice Party and Dravidar Kazhagam . Politics

7700-464: The language spoken by most of Chennai's population; English is largely spoken by white-collar workers . As per the 2011 census, Tamil is the most spoken language with 3,640,389 (78.3%) of speakers followed by Telugu (432,295), Urdu (198,505), Hindi (159,474) and Malayalam (104,994). Madras Bashai is a variety of the Tamil spoken by people in the city. It originated with words introduced from other languages such as English and Telugu on

7800-493: The materials it touches to become extremely brittle. Liquid oxygen is also a very powerful oxidizing agent: organic materials will burn rapidly and energetically in liquid oxygen. Further, if soaked in liquid oxygen , some materials such as coal briquettes, carbon black , etc., can detonate unpredictably from sources of ignition such as flames, sparks or impact from light blows. Petrochemicals , including asphalt , often exhibit this behavior. The tetraoxygen molecule (O 4 )

7900-418: The model hospital of the East India Company. In 1827, D. Mortimar was appointed as the superintendent of the hospital. The Madras Medical College started off as a private medical hall run by Mortimar, and was regularised into a medical school in 1835, which was opened by the governor, Sir Frederick Adams . The governor then promulgated an ordinance to make the school a state-sponsored one and attached it to

8000-487: The monsoon and winter. The southern stretch of Chennai's coast from Tiruvanmiyur to Neelangarai are favoured by the endangered olive ridley sea turtles to lay eggs every winter. Guindy National Park is a protected area within the city limits and wildlife conservation and research activities take place at Arignar Anna Zoological Park . Madras Crocodile Bank Trust is a herpetology research station, located 40 km (25 mi) south of Chennai. The city's tree cover

8100-543: The name was in August 1639 in a sale deed to Francis Day of the East India Company. A land grant was given to the Chennakesava Perumal Temple in Chennapatanam later in 1646, which some scholars argue to be the first use of the name. The name Madras is of native origin, and has been shown to have been in use before the British established a presence in India. A Vijayanagara-era inscription found in 2015

8200-440: The nitrogen has evaporated from such a vessel, there is a risk that liquid oxygen remaining can react violently with organic material. Conversely, liquid nitrogen or liquid air can be oxygen-enriched by letting it stand in open air; atmospheric oxygen dissolves in it, while nitrogen evaporates preferentially. The surface tension of liquid oxygen at its normal pressure boiling point is 13.2 dyn/cm. In commerce, liquid oxygen

8300-484: The old cardiology block. The tank, costing ₹ 4 million, has been built free of cost by Inox Air Products, which supplies the gas to the hospital. A full tank will ensure that supply will last for 5 days. Dispensaries attached to the hospital include Government Secretariat Dispensary, Government High Court Dispensary, Government Chepauk Offices Dispensary, Government Estate Dispensary, and Government Raj Bhavan Dispensary. As of 2013, there were 231 beds for various ICUs at

8400-400: The planning and development of the Chennai Metropolitan Area , which is spread over an area of 1,189 km (459 sq mi), covering the Chennai district and parts of Tiruvallur , Kanchipuram and Chengalpattu districts. The metropolitan area consists of four municipal corporations , 12 municipalities and other smaller panchayats . As the capital of the state of Tamil Nadu,

8500-412: The population with minorities including Telugus , Marwaris , Gujaratis , Parsis , Sindhis , Odias , Goans , Kannadigas , Anglo-Indians , Bengalis , Punjabis , and Malayalees . The city also has a significant expatriate population. As of 2001 , out of the 2,937,000 migrants in the city, 61.5% were from other parts of the state, 33.8% were from rest of India and 3.7% were from outside

8600-531: The region. Pallavas of Kanchi became independent rulers of the region from 3rd to 9th century CE and the areas of Mahabalipuram and Pallavaram were built during the reign of Mahendravarman I . In 879, Pallavas were defeated by the Later Cholas led by Aditya I and Jatavarman Sundara Pandyan later brought the region under the Pandya rule in 1264. The region came under the influence of Vijayanagara Empire in

8700-467: The season with significant flooding in 2015 and 2023 . </ref> A protected estuary on the Adyar River forms a natural habitat for several species of birds and animals. Chennai is also a popular city for birding with more than 130 recorded species of birds have been recorded in the city. Marshy wetlands such as Pallikaranai and inland lakes also host a number of migratory birds during

8800-467: The settlement. The region around Chennai was an important administrative, military, and economic centre for many centuries. During the 1st century CE , Tamil poet named Thiruvalluvar lived in the town of Mylapore , a neighbourhood of present-day Chennai. The region was part of Tondaimandalam which was ruled by the Early Cholas in the 2nd century CE by subduing Kurumbas , the original inhabitants of

8900-466: The shrinkage of water bodies and wetlands. The water bodies have shrunk from an estimated 12.6 km (4.9 sq mi) in 1893 to 3.2 km (1.2 sq mi) in 2017. The number of wetlands in the city has decreased from 650 in 1970 to 27 in 2015. Nearly half of the native plant species in the city's wetlands have disappeared with only 25 per cent of the erstwhile area covered with aquatic plants still viable. The major water bodies including

9000-521: The world-renowned Yale University ) was instrumental in the development of the hospital and gave it new premises within the Fort in 1690. The hospital moved out of the fort after the Anglo-French War and it took 20 years before it could settle in the present permanent place in 1772. By 1771, the new location for the hospital, which until then was located on Armenian Street , was finalized—the land on which

9100-701: The world. In October 2017, Chennai was added to the UNESCO Creative Cities Network (UCCN) list. It is a major film production centre and home to the Tamil-language film industry . The name Chennai was derived from the name of Chennappa Nayaka , a Nayak ruler who served as a general under Venkata Raya of the Vijayanagara Empire from whom the British East India Company acquired the town in 1639. The first official use of

9200-476: The year is in December–January, with average temperature of 19–25 °C (66–77 °F) and the lowest recorded temperature of 13.9 °C (57.0 °F) on 11 December 1895 and 29 January 1905. Chennai receives most of its rainfall from the northeast monsoon between October and December while smaller amounts of rain come from the southwest monsoon between June and September. The average annual rainfall

9300-402: Was dated to the year 1367 and mentions the port of Mādarasanpattanam, along with other small ports on the east coast, and it was theorized that the aforementioned port is the fishing port of Royapuram . Madras might have been derived from Madraspattinam, a fishing village north of Fort St. George but it is uncertain whether the name was in use before the arrival of Europeans. In July 1996,

9400-469: Was established on 21 June 1683 followed by first commercial banks such as Bank of Hindustan (1770) and General Bank of India (1786). Bank of Madras merged with two other presidency banks to form Imperial Bank of India in 1921 which in 1955 became the State Bank of India , the largest bank in India. Chennai is the headquarters of nationalized banks Indian Bank and Indian Overseas Bank . Chennai hosts

9500-400: Was expanded from 174 km (67 sq mi) to an area of 426 km (164 sq mi), divided into three regions North, South and Central covering 200 wards . The corporation is headed by a mayor , elected by the councillors , who are elected through a popular vote by the residents. The Chennai Metropolitan Development Authority (CMDA) is the nodal agency responsible for

9600-528: Was first predicted in 1924 by Gilbert N. Lewis , who proposed it to explain why liquid oxygen defied Curie's law . Modern computer simulations indicate that, although there are no stable O 4 molecules in liquid oxygen, O 2 molecules do tend to associate in pairs with antiparallel spins , forming transient O 4 units. Liquid nitrogen has a lower boiling point at −196 °C (77 K) than oxygen's −183 °C (90 K), and vessels containing liquid nitrogen can condense oxygen from air: when most of

9700-524: Was made the winter capital of the Madras Presidency , a colonial province of the British Raj in the Indian subcontinent . After India gained independence in 1947, Madras continued as the capital city of the Madras State and present-day Tamil Nadu. The city was officially renamed as Chennai in 1996. The city is coterminous with Chennai district , which together with the adjoining suburbs constitutes

9800-530: Was performed at the hospital in January 1996. In April 2007, the government decided to open pay-and-use wards with 200 beds and own nurses, to be maintained by the Tamil Nadu Medical Commission, at the hospital. In March 2013, a new kidney dialysis centre with 12 machines was commissioned at the hospital at a cost of ₹ 10 million. As the city of Chennai falls under seismic zone III, the structure

9900-489: Was started by 16 November 1664 as a small hospital to treat the sick soldiers of the British East India Company . Sir Edward Winter , who was the agent of the company, was instrumental in the establishment of the first British Hospital at Madras . In its early days, the hospital was housed at the Fort St. George and in the next 25 years, it grew into a formal medical facility. Governor Sir Elihu Yale (the initial benefactor of

10000-560: Was then formerly a fishing village known as "Madraspatnam". A year later, the company built Fort St. George , the first major English settlement in India, which became the nucleus of the growing colonial city and urban Chennai. In 1746, Fort St. George and the town were captured by the French under General La Bourdonnais , the Governor of Mauritius , who plundered the town and its outlying villages. The British regained control in 1749 through

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