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  2. Joint Entrance Examination – Advanced - Wikipedia

    en.wikipedia.org/wiki/Joint_Entrance_Examination...

    JEE(Advanced) is conducted in two shifts of three hours each - Paper-1 and Paper-2,(both papers are compulsory to write)both the papers consist questions from three major subjects- Physics, Chemistry and Mathematics. Unlike most of the other exams, the type , the number of questions being asked in the paper, the total marks and the marking ...

  3. List of important publications in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_important...

    Wiley-Interscience, 2nd edition, 1991. Wiley-Interscience, 3rd edition, 1999, ISBN 0-471-16019-9. Wiley-Interscience, 4th edition, 2007, ISBN 0-471-69754-0. Wiley-Interscience, 5th edition, 2014, ISBN 9781118057483. Description: A comprehensive reference for the usage of protecting groups in organic synthesis.

  4. Outline of chemistry - Wikipedia

    en.wikipedia.org/wiki/Outline_of_chemistry

    Organic chemistry (outline) – study of the structure, properties, composition, mechanisms, and reactions of organic compounds. An organic compound is defined as any compound based on a carbon skeleton. Biochemistry – study of the chemicals, chemical reactions and chemical interactions that take place in living organisms.

  5. Organic chemistry - Wikipedia

    en.wikipedia.org/wiki/Organic_chemistry

    Category. v. t. e. Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1] Study of structure determines their structural formula.

  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. Resonance (chemistry) - Wikipedia

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

    Contributing structures of the carbonate ion. In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, [1] also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.

  8. Joint Entrance Examination – Main - Wikipedia

    en.wikipedia.org/wiki/Joint_Entrance_Examination...

    The examination consists of only two papers: Paper 1 for B.E./B.Tech courses and Paper 2 for B.Arch and B.Planning courses. [5] A candidate can opt for any or both the papers. Paper 1 is mandatory a computer based test (CBT) (called online mode) from 2018 onwards. Until 2018, there was an option between offline pen and paper mode and online ...

  9. IUPAC nomenclature of organic chemistry - Wikipedia

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

    The groups are on carbon atoms 3 and 9. As there are two, we write 3,9-dione. The numbering of the molecule is based on the ketone groups. When numbering from left to right, the ketone groups are numbered 3 and 9. When numbering from right to left, the ketone groups are numbered 15 and 21. 3 is less than 15, therefore the ketones are numbered 3 ...