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ICAO stands for International Civil Aviation Organization. The International Civil Aviation Organization (ICAO) is a UN specialized agency, established by States in 1944 to manage the administration and governance of the Convention on International Civil Aviation (Chicago Convention).

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Normally the Commonwealth Games are held at intervals of 4 years. The Commonwealth Games is an international multi-sport event involving athletes from the Commonwealth of Nations. The event was first held in 1930, and has taken place every four years since then.

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Green Park is the sports stadium, located in Kanpur. Green Park Stadium is a 32,000 capacity floodlit cricket stadium located in Kanpur, India, and home to the Uttar Pradesh cricket team. The stadium is under the control of the Sports Department Uttar Pradesh.

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In 1991 the USSR formally disintegrates into 15 republics. In the decades after it was established, the Russian-dominated Soviet Union grew into one of the world’s most powerful and influential states and eventually encompassed 15 republics–Russia, Ukraine, Georgia, Belorussia, Uzbekistan, Armenia, Azerbaijan, Kazakhstan, Kyrgyzstan, Moldova, Turkmenistan, Tajikistan, Latvia, Lithuania, and Estonia. In 1991, the Soviet Union was dissolved following the collapse of its communist government.

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Gravity setting chambers are used in industries to remove suspended particulate matter. A Gravitational Settling Chamber is a rectangular chamber in which several horizontal trays are fixed. When the polluted gas enters the chamber, its velocity is kept low so that the particulates get sufficient time to settle down due to gravity.

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Human Rights Day is on 10 December. This day is celebrated internationally to honor 10th Dec 1948, when the United Nations adopted the Universal Declaration of Human Rights at Palais de Challoit, Paris after the experience of the Second World War.

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The Royal Swedish Academy of Sciences, awards the Nobel Prize in physics and chemistry.