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Those who wish to adopt the textbooks are required to send a request to NCERT, upon which soft copies of the books are received. The material is press-ready and may be printed by paying a 5% royalty, and by acknowledging NCERT. [11] The textbooks are in color-print and are among the least expensive books in Indian book stores. [11]
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.
Byju's is an education tutoring app that runs on a freemium model, [30] with free access to content limited for 15 days after the registration. [30] [31] It was launched in August 2015, [32] offering educational content for students from classes 4 to 12. [33]
[3] [9] Byju encouraged her to become a teacher due to her questions during breaks between the classes. [3] Her career as a teacher began in 2008 [3] at age 21. [10] [7] In 2020, she told Fortune India, "It was an auditorium-style class with 100 students. They were just a couple of years younger than me so to look mature I wore a saree to the ...
Saudi Arabia started a project in 2011 to digitize all text books other than Math and Science. [citation needed] The Arab League Educational, Cultural and Scientific Organization (ALECSO) and the U.S. State Department launched an Open Book Project in 2013, supporting "the creation of Arabic-language open educational resources (OERs)". [166]
A concise four-page summary of the most important material in the Green Book was published in the July–August 2011 issue of Chemistry International, the IUPAC news magazine. The second edition of the Green Book (ISBN 0-632-03583-8) was first published in 1993. It was reprinted in 1995, 1996, and 1998.
Byju was born on 5 January 1980 in the Azhikode [1] [2] village of Kerala, India to Raveendran and Shobhanavalli, physics and mathematics teachers, respectively. [3] [4] He studied at a Malayalam medium school where his mother was a mathematics teacher and his father a physics teacher. [5] [6] He would skip classes and then learn at home. [7] [8]
The extended Debye–Hückel equation provides accurate results for μ ≤ 0.1. For solutions of greater ionic strengths, the Pitzer equations should be used. In these solutions the activity coefficient may actually increase with ionic strength. The Debye–Hückel plot with different values for ion charge Z and ion diameter a