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The Sri Lankan Advanced Level (A-level), formerly known as the Higher School Certificate (HSC), is a General Certificate of Education (GCE) qualification exam in Sri Lanka, similar to the British Advanced Level. It is conducted annually by the Department of Examinations under the Ministry of Education.
Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules. The prefixes " cis " and " trans " are from Latin: "this side of" and "the other side of", respectively. [1] In the context of chemistry, cis indicates that the functional groups (substituents) are on the same side of some plane ...
cxc.org. The Caribbean Examinations Council (CXC) is an examination board in the Caribbean. [1] It was established in 1972 [2] under agreement by the participating governments in the Caribbean Community to conduct such examinations as it may think appropriate and award certificates and diplomas on the results of any such examinations so conducted.
[4] [1] Sinhala is also spoken as the first language by other ethnic groups in Sri Lanka, totalling about 2 million speakers as of 2001. [5] It is written using the Sinhala script, which is a Brahmic script closely related to the Grantha script of South India. [6] Sinhala is one of the official and national languages of Sri Lanka, alongside Tamil.
However, in the Physics paper 1 exam, a topic that was stated as "Not Assessed" came up; AQA accepted the mistake and awarded all students the full 9 marks to the question. [69] Also, in 2022, a question on one of the higher Maths papers was leaked hours before students sat them. The exam board Edexcel apologised and conducted a full ...
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.
In organic chemistry, the Cahn–Ingold–Prelog (CIP) sequence rules (also the CIP priority convention; named after Robert Sidney Cahn, Christopher Kelk Ingold, and Vladimir Prelog) are a standard process to completely and unequivocally name a stereoisomer of a molecule. [1][2]: 26 The purpose of the CIP system is to assign an R or S ...
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. Importance: A reference publication.