Vijayanagar Empire was ruled by four important dynasties namely, Sangama, Saluva, Tuluva and Aravidu. The Vijayanagara Empire was founded by Harihara and Bukka and the reign was from 1336 A.D to 1646 A.D. Harihara and Bukka are the founders of the Vijayanagar City in 1336 A.D. on the southern banks of Tungabhadra. They made Hampi the capital city. They served under Vira Ballala III, the Hoysala King. Krishnadevaraya of the Tuluva dynasty was the most famous ruler of Vijayanagar. He ruled from 1509-29.

Robert Clive was Governor of Bengal during 1757–60 and again during 1765–67; he established Dual Government in Bengal from 1765–72. In the Battle of Plassey, the Nawab was defeated by the British despite having a larger force. Clive ensured an English victory by bribing the Nawab’s army Commander Mir Jaffar, who was installed as Bengal’s Nawab after the battle. Clive was also able to capture some French forts in Bengal. For these exploits, Robert Clive was made Lord Clive, Baron of Plassey.

The areas where the warm and cold currents meet provide the best fishing grounds of the world. Seas around Japan and the eastern coast of North America are such examples. The areas where a warm and cold current meet also experience foggy weather making it difficult for navigation.

A naturally occurring substance that has a definite chemical composition is a mineral. Minerals are not evenly distributed over space. They are concentrated in a particular area or rock formations. Some minerals are found in areas which are not easily accessible such as the Arctic Ocean bed and Antarctica.

The Speaker of the Lok Sabha appoints the chairman of all the parliamentary committees of the Lok Sabha and supervises their functioning. He himself is the chairman of the Business Advisory Committee, the Rules Committee and the General Purpose Committee.

The constitution also vests the residuary powers (subjects not enumerated in any of the three Lists) with the Union Parliament. The residuary powers have been granted to the Union contrary to the convention in other federations of the world, where the residuary powers are given to the States. However, in case of any conflict, whether a particular matter falls under the residuary power or not is to be decided by the court.

Gombayatta is the traditional puppet show of Karnataka. The traditional string puppets of the Rajasthan are known as Kathputli. Bommalattam is puppetry indigenous to the region of Tamil Nadu. The string puppets of Odisha are known as Kundhei. They are made of light wood and are dressed in long skirts.

The Nocte, Wancho, Tangsa, Naga, Kuki, Mizo, Lakher, Chakma, and Panei ethnic groups constitute most of the population of northeast India.

Sodium-24 is used as a radionuclide that is injected into the human bloodstream to detect any clots. Arsenic 74 is mainly used to diagnose brain cancer.

The heat from the Earth is referred to as geothermal energy. It's environmentally friendly and long-lasting. Geothermal energy resources span from the shallow earth to hot water and hot rock found a few miles beneath the Earth's surface, and even further down to the extremely high temperatures of molten rock known as magma.