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Offset applied for CBSE Class 12 exams (Delhi) [21] [0 = no moderation] Subject Offset (2019) Offset (2018) Offset (2017) Offset (2016) Mathematics 11 9 10 15 Physics 11 9 9 8 Chemistry 10 9 9 7 Biology 5 0 3 0 Political Science 6 0 5 5 Economics 5 0 3 6 Business Studies 5 6 6 11 Sociology 2 0 0 6 Geography 1 0 0 8
[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 ...
In the Class 7 textbook topic titled “Our Pasts-2”, pages 48 and 49 have been excluded. These pages mentioned “Mughal Emperors: Major campaigns and events.” The deletions also affected Biology and Chemistry textbooks as the theory of evolution and the periodic table were also purged from class 10 NCERT textbooks. [35] [36]
Traité Élémentaire de Chimie, 1789, available in English as Elementary Treatise of Chemistry; Description: This book was intended as an introduction to new theories in chemistry and as such, was one of the first Chemistry textbooks. [9] Importance: Introduction, Influence.
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 ...
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The following outline acts as an overview of and topical guide to chemistry: . Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions.
General chemistry (sometimes referred to as "gen chem") is offered by colleges and universities as an introductory level chemistry course usually taken by students during their first year. [1] The course is usually run with a concurrent lab section that gives students an opportunity to experience a laboratory environment and carry out ...