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  2. Past paper - Wikipedia

    en.wikipedia.org/wiki/Past_paper

    A past paper is an examination paper from a previous year or previous years, usually used either for exam practice or for tests such as University of Oxford, [1] [2] University of Cambridge [3] College Collections. Exam candidates find past papers valuable in test preparation.

  3. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    On 12 April 2018, the police said that Rakesh Kumar, who leaked the class 12 economics paper, had leaked class 10 mathematics paper also. [40] Consequently, the Central Board of Secondary Education has put in place a system of "encrypted" question papers, which are supposed to be printed by the schools half an hour before the exam starts. [41]

  4. C++ - Wikipedia

    en.wikipedia.org/wiki/C++

    A class containing a pure virtual function is called an abstract class. Objects cannot be created from an abstract class; they can only be derived from. Any derived class inherits the virtual function as pure and must provide a non-pure definition of it (and all other pure virtual functions) before objects of the derived class can be created.

  5. Wikipedia : Requested articles/Applied arts and sciences ...

    en.wikipedia.org/wiki/Wikipedia:Requested...

    Leon Gatys - author of the hugely influential AI/machine learning paper, A Neural Algorithm of Artistic Style that first describes the style transfer technique of identifying, separating artistic style of an image from the content/shape; . This technique has been used, adapted, and iterating upon by the entire industry and is, again, hugely ...

  6. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  7. IUPAC nomenclature of organic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    For example, the three isomers of xylene CH 3 C 6 H 4 CH 3, commonly the ortho-, meta-, and para-forms, are 1,2-dimethylbenzene, 1,3-dimethylbenzene, and 1,4-dimethylbenzene. The cyclic structures can also be treated as functional groups themselves, in which case they take the prefix "cyclo alkyl -" (e.g. "cyclohexyl-") or for benzene, "phenyl-".

  8. History of chemistry - Wikipedia

    en.wikipedia.org/wiki/History_of_chemistry

    The term chymistry has been used to describe the blend of alchemy and chemistry that existed before that time. [ 29 ] During the Renaissance, exoteric alchemy remained popular in the form of Paracelsian iatrochemistry , while spiritual alchemy flourished, realigned to its Platonic , Hermetic, and Gnostic roots.

  9. Stochastic process - Wikipedia

    en.wikipedia.org/wiki/Stochastic_process

    The term stochastic process first appeared in English in a 1934 paper by Joseph Doob. [60] For the term and a specific mathematical definition, Doob cited another 1934 paper, where the term stochastischer Prozeß was used in German by Aleksandr Khinchin , [ 63 ] [ 64 ] though the German term had been used earlier, for example, by Andrei ...