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  2. Bredig's arc method - Wikipedia

    en.wikipedia.org/wiki/Bredig's_arc_method

    Bredig's arc method or electrical disintegration is a method of preparation of colloidal solution, of metals such as gold, silver or platinum.. This method consists of both dispersion and condensation.

  3. Open educational resources - Wikipedia

    en.wikipedia.org/wiki/Open_educational_resources

    India – National Council Of Educational Research and Training (NCERT) digitized all its textbooks from 1st standard to 12th standard. The textbooks are available online for free. Central Institute of Educational Technology (CIET), a constituent Unit of NCERT, digitized more than thousand audio and video programmes. All the educational AV ...

  4. National Curriculum Framework 2005 - Wikipedia

    en.wikipedia.org/wiki/National_Curriculum...

    Entrance to NCERT campus on Aurobindo Marg, New Delhi. The National Curriculum Framework 2005 (NCF 2005) is the fourth National Curriculum Framework published in 2005 by the National Council of Educational Research and Training (NCERT) in India. Its predecessors were published in 1975, 1988, 2000.

  5. Fischer indole synthesis - Wikipedia

    en.wikipedia.org/wiki/Fischer_indole_synthesis

    Today antimigraine drugs of the triptan class are often synthesized by this method. The Fischer indole synthesis. This reaction can be catalyzed by Brønsted acids such as HCl, H 2 SO 4, polyphosphoric acid and p-toluenesulfonic acid or Lewis acids such as boron trifluoride, zinc chloride, and aluminium chloride. Several reviews have been ...

  6. Ullmann reaction - Wikipedia

    en.wikipedia.org/wiki/Ullmann_reaction

    [1] [2] Ullman overview. Aryl-Aryl bond formation is a fundamental tool in modern organic synthesis, with applications spanning natural product synthesis, pharmaceuticals, agrochemicals, and the development of commercial dyes and polyaromatics. With over a century of history, the Ullmann reaction has been one of the first to use a transition ...

  7. Chemical kinetics - Wikipedia

    en.wikipedia.org/wiki/Chemical_kinetics

    Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is different from chemical thermodynamics, which deals with the direction in which a reaction occurs but in itself tells nothing about its rate.

  8. Qualitative inorganic analysis - Wikipedia

    en.wikipedia.org/wiki/Qualitative_inorganic_analysis

    Classical qualitative inorganic analysis is a method of analytical chemistry which seeks to find the elemental composition of inorganic compounds.It is mainly focused on detecting ions in an aqueous solution, therefore materials in other forms may need to be brought to this state before using standard methods.

  9. Beckmann rearrangement - Wikipedia

    en.wikipedia.org/wiki/Beckmann_rearrangement

    This π-complex is not found in the H 3 O + (H 2 O) 6. The Beckmann rearrangement scheme for acetophenone oxime under oxonium–acetic acid complex and hydronium–water complex. With the cyclohexanone-oxime, the relief of ring strain results in a third reaction mechanism, leading directly to the protonated caprolactam in a single concerted ...