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Two children from Tamil Nadu holding a Samacheer Kalvi textbook. Samacheer Kalvi or Tamil Nadu Uniform System of School Education or Equitable education system is a School Education Department of Government of Tamil Nadu, India programme to integrate the various school educational systems within the state.
The National Standard Examination in Chemistry or NSEC is an examination in chemistry for higher secondary school students in India, usually conducted in the end of November. [1] The examination is organized by the Indian Association of Chemistry Teachers. Over 30,000 students, mainly from Standard 12, sit for this examination.
Twelfth Grade (also known as 12th Grade, Grade 12, Senior Year, Standard 12, 12th Standard, 12th Class, or Class 12th or Class 12) is the twelfth and final year of formal or compulsory education. It is typically the final year of secondary school and K–12 in most parts of the world.
The discovery of trichloroacetic acid by Jean-Baptiste Dumas in 1839 delivered a striking example to the slowly evolving theory of organic radicals and valences. [12] The theory was contrary to the beliefs of Jöns Jakob Berzelius , starting a long dispute between Dumas and Berzelius.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
An MDL Molfile is a file format for holding information about the atoms, bonds, connectivity and coordinates of a molecule.. The molfile consists of some header information, the Connection Table (CT) containing atom info, then bond connections and types, followed by sections for more complex information.
Carbon-12 (12 C) is the most abundant of the two stable isotopes of carbon (carbon-13 being the other), amounting to 98.93% of element carbon on Earth; [1] its abundance is due to the triple-alpha process by which it is created in stars.
The Right of Children to Free and Compulsory Education Act or Right to Education Act (RTE) is an Act of the Parliament of India enacted on 4 August 2009, which describes the modalities of the importance of free and compulsory education for children between the age of 6 to 14 years in India under Article 21A of the Indian Constitution. [1]