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[26] [27] Again in 2022, a new controversy started when both CBSE and NCERT removed topics regarding Islamic Empires in the class 12 history textbook and chapters like “Challenges to Democracy” in the class 10 political science subject and many others, saying it is necessary to reduce syllabus to reduce examination pressure on students by ...
Due to the rapid increase in COVID-19 cases in the country, CBSE cancelled the board exams of the 10th class and postponed the 12th class exams. [33] Like the 10th, Class 12th Board Exam 2021 has also been cancelled. Prime Minister Narendra Modi took a decision on this after a long meeting on 1 June 2021. [34] [35]
The National Standard Examination in Chemistry or NSEC is an examination in chemistry for higher secondary school students in India, usually conducted in the end of November. [1] The examination is organized by the Indian Association of Chemistry Teachers. Over 30,000 students, mainly from Standard 12, sit for this examination.
In annual report (2008-2009) of NCERT, regional institute are defined as "Regional Resource Centers for school and teacher education". [6] It further extents the definition by defining RIEs as "centers striving for academic excellence, innovation, professional competence, commitment and the sharing of experiences and expertise" for constant ...
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.
Importance: Influence, as described in the presentation speech for the Nobel Prize in Chemistry 1995: “The findings presented by this year's laureates in chemistry have had an enormous political and industrial impact. This was because they clearly identified unacceptable environmental hazards in a large, economically important sector.”
The anion [Ce(NO 3) 6] 2− has T h (idealized O h) molecular symmetry.The CeO 12 core defines an icosahedron. [4]Ce 4+ is a strong one-electron oxidizing agent.In terms of its redox potential (E° ≈ 1.61 V vs. N.H.E.) it is an even stronger oxidizing agent than Cl 2 (E° ≈ 1.36 V).
In chemistry, pyramidal inversion (also umbrella inversion) is a fluxional process in compounds with a pyramidal molecule, such as ammonia (NH 3) "turns inside out". [1] [2] It is a rapid oscillation of the atom and substituents, the molecule or ion passing through a planar transition state. [3]