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Explanation
The correct answer is 1757. The Battle of Plassey was fought in 1757. It was a significant battle in the history of India, marking the beginning of British colonial rule in the country. The battle took place between the forces of the British East India Company, led by Robert Clive, and the army of Siraj-ud-Daulah, the Nawab of Bengal. The British emerged victorious in the battle, which resulted in the establishment of British control over Bengal and laid the foundation for their subsequent dominance in India.

Explanation
The nucleus of an atom consists of protons and neutrons. Protons have a positive charge, while neutrons have no charge. These particles are tightly packed together in the center of the atom, forming the nucleus. Electrons, which have a negative charge, orbit around the nucleus in energy levels. Therefore, the correct answer is protons and neutrons.

Explanation
The great Victoria desert is located in Australia. This desert is a vast expanse of arid land in the southern part of the continent. It is one of the largest deserts in Australia and is known for its harsh and dry conditions. The desert is characterized by its red sand dunes, sparse vegetation, and extreme temperatures. It is home to a diverse range of wildlife, including reptiles, birds, and mammals.

Explanation
The correct answer is Reserve Bank of India. The Reserve Bank of India is responsible for performing the central banking functions in India. It acts as the country's central monetary authority, controlling the issuance and supply of the Indian rupee, managing foreign exchange reserves, and formulating and implementing monetary policies. It also supervises and regulates the banking system in India to maintain stability and promote economic growth.

Explanation
Galileo Galilei is credited with inventing the thermometer. He developed a device called the thermoscope, which was the precursor to the modern thermometer. The thermoscope could measure changes in temperature by using the expansion and contraction of air inside a glass tube. Galileo's invention laid the foundation for the development of more accurate and precise thermometers in the future.