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  2. Samacheer Kalvi - Wikipedia

    en.wikipedia.org/wiki/Samacheer_Kalvi

    The petitioners claimed that Samacheer Kalvi was not helping the students crack the competitive exams. The HC dismissed the petition, at the stage of admission. First Division Bench of Chief Justice Munishwar Nath Bhandari and Justice D. Bharatha Chakravarthy did not entertain the case and said that it was for the government and not the court ...

  3. Methanogen - Wikipedia

    en.wikipedia.org/wiki/Methanogen

    While some methanogens are extremophiles, such as Methanopyrus kandleri, which grows between 84 and 110°C, [6] or Methanonatronarchaeum thermophilum, which grows at a pH range of 8.2 to 10.2 and a Na + concentration of 3 to 4.8 M, [7] most of the isolates are mesophilic and grow around neutral pH.

  4. Birch reduction - Wikipedia

    en.wikipedia.org/wiki/Birch_reduction

    The Birch reduction is an organic reaction that is used to convert arenes to 1,4-cyclohexadienes.The reaction is named after the Australian chemist Arthur Birch and involves the organic reduction of aromatic rings in an amine solvent (traditionally liquid ammonia) with an alkali metal (traditionally sodium) and a proton source (traditionally an alcohol).

  5. Salt (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Salt_(chemistry)

    2, has uranium in an oxidation state of +6, so would be called a dioxouranium(VI) ion in Stock nomenclature. [110] An even older naming system for metal cations, also still widely used, appended the suffixes -ous and -ic to the Latin root of the name, to give special names for the low and high oxidation states. [ 111 ]

  6. Precipitation (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Precipitation_(chemistry)

    [12] In metallurgy, precipitation from a solid solution is also a way to strengthen alloys. Precipitation of ceramic phases in metallic alloys such as zirconium hydrides in zircaloy cladding of nuclear fuel pins can also render metallic alloys brittle and lead to their mechanical failure.

  7. Stefan–Boltzmann law - Wikipedia

    en.wikipedia.org/wiki/Stefan–Boltzmann_law

    Wavelength- and subwavelength-scale particles, [5] metamaterials, [6] and other nanostructures [7] are not subject to ray-optical limits and may be designed to have an emissivity greater than 1. In national and international standards documents, the symbol M {\displaystyle M} is recommended to denote radiant exitance ; a superscript circle ...

  8. Right of Children to Free and Compulsory Education Act, 2009

    en.wikipedia.org/wiki/Right_of_Children_to_Free...

    A critical development in 2011 has been the decision taken in principle to extend the right to education till Class X (age 16) [17] and into the preschool age range. [18] However, the government's more recent policy focus has been on the introduction of a new National Education Policy instead of an extension of the Act.

  9. June 12 - Wikipedia

    en.wikipedia.org/wiki/June_12

    June 12 is the 163rd day of the year (164th in leap years) in the Gregorian calendar; 202 days remain until the end of the year. Events. Pre-1600. 910 – ...