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  2. Federal Board of Intermediate and Secondary Education

    en.wikipedia.org/wiki/Federal_Board_of...

    The FBISE was established under the FBISE Act 1975. [2] It is an autonomous body of working under the Ministry of Federal Education and Professional Training. [3] The official website of FBISE was launched on June 7, 2001, and was inaugurated by Mrs. Zobaida Jalal, the Minister for Education [4] The first-ever online result of FBISE was announced on 18 August 2001. [5]

  3. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

  4. Higher Secondary Certificate - Wikipedia

    en.wikipedia.org/wiki/Higher_Secondary_Certificate

    Class XI - XII roughly covers the 16-17 age group in the context of Bangladesh. After 10 years of schooling at the primary and secondary level, students who succeed in passing the Secondary School Certificate (SSC) examination have the option of joining a college for a two-year higher secondary education in respective areas of specialization or ...

  5. Colligative properties - Wikipedia

    en.wikipedia.org/wiki/Colligative_properties

    The assumption that solution properties are independent of nature of solute particles is exact only for ideal solutions, which are solutions that exhibit thermodynamic properties analogous to those of an ideal gas, and is approximate for dilute real solutions. In other words, colligative properties are a set of solution properties that can be ...

  6. Defining equation (physical chemistry) - Wikipedia

    en.wikipedia.org/wiki/Defining_equation...

    Theoretical chemistry requires quantities from core physics, such as time, volume, temperature, and pressure.But the highly quantitative nature of physical chemistry, in a more specialized way than core physics, uses molar amounts of substance rather than simply counting numbers; this leads to the specialized definitions in this article.

  7. Solution - Wikipedia

    en.wikipedia.org/wiki/Solution

    Solution may refer to: Solution (chemistry), a mixture where one substance is dissolved in another; Solution (equation), in mathematics Numerical solution, in ...

  8. Combinatorial chemistry - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_chemistry

    Solid-phase synthesis offers potential solutions to obviate the need for typical quenching and purification steps often used in synthetic chemistry. In general, a starting molecule is adhered to a solid support (typically an insoluble polymer ), then additional reactions are performed, and the final product is purified and then cleaved from the ...

  9. Base (chemistry) - Wikipedia

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

    The equilibrium constant for this reaction at 25 °C is 1.8 x 10 −5, [12] such that the extent of reaction or degree of ionization is quite small. Lewis bases A Lewis base or electron-pair donor is a molecule with one or more high-energy lone pairs of electrons which can be shared with a low-energy vacant orbital in an acceptor molecule to ...