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Physical properties. Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C (604 °F) without decomposition and with a boiling point of 1,388 °C (2,530 °F). It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. [14] Sodium hydroxide is insoluble in ether and other non ...

Hindi ( Devanāgarī: हिन्दी [d], Hindī ), or more precisely Modern Standard Hindi (Devanagari: मानक हिन्दी Mānak Hindī ), [18] is an Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of northern, central, eastern, and western India.

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) Adrenochrome is a chemical compound produced by the oxidation of adrenaline (epinephrine). It was the subject of limited research from the 1950s through to the 1970s as a potential cause of schizophrenia.

History of chemistry. The 1871 periodic table constructed by Dmitri Mendeleev. The periodic table is one of the most potent icons in science, lying at the core of chemistry and embodying the most fundamental principles of the field. The history of chemistry represents a time span from ancient history to the present.

The National Education Policy of India 2020 ( NEP 2020 ), which was started by the Union Cabinet of India on 29 July 2020, outlines the vision of new education system of India. [1] The new policy replaces the previous National Policy on Education, 1986. [a] The policy is a comprehensive framework for elementary education to higher education as ...

In India, board examinations refer to the public examinations that are conducted at the end of the completion of Secondary and Senior secondary Education.The class 10 Board Exam are conducted by State Board (), Central Board of Secondary Education (All India Secondary School Examination) And Council for the Indian School Certificate Examinations ().The class 10 th exam is important for ...